按照《計量法》規定,對社會出具具有證明作用的數據實驗室必須經過實驗室資質認定(計量認證)和/或CNAS認可,而資質認定和/或CNAS認可是限定實驗室能力範圍的,實驗室隻能在能力範圍限定的產品(參數)範圍內出具帶相應標識的檢驗報告,檢驗使用的標準不在能力範圍者,我們稱之為超範圍檢驗。國家質檢總局發布執行的《產品質量監督抽查管理辦法》、《產品質量檢驗機構工作質量分類監管辦法》以(yi)及(ji)其(qi)他(ta)規(gui)定(ding)中(zhong)也(ye)都(dou)明(ming)確(que)規(gui)定(ding)實(shi)驗(yan)室(shi)不(bu)得(de)超(chao)能(neng)力(li)範(fan)圍(wei)開(kai)展(zhan)檢(jian)測(ce)工(gong)作(zuo),但(dan)在(zai)實(shi)際(ji)工(gong)作(zuo)過(guo)程(cheng)中(zhong),個(ge)別(bie)檢(jian)驗(yan)機(ji)構(gou)超(chao)能(neng)力(li)範(fan)圍(wei)檢(jian)測(ce)情(qing)況(kuang)時(shi)有(you)發(fa)生(sheng)。超(chao)範(fan)圍(wei)檢(jian)驗(yan)主(zhu)要(yao)有(you)三(san)種(zhong)形(xing)式(shi):實驗室或實驗室中個別人員為滿足客戶要求,為實驗室爭取經濟利益,對不在能力範圍內的產品開展檢驗工作,出具帶標識的檢驗報告;或實驗室人員以為采用標準中的個別標準在能力範圍內,誤將產品進行檢驗並出具帶標識的檢驗報告。近年來,質檢總局、認監委、shengshizhijianjuduichaonenglifanweijiancedechufadoufeichangyanli,shenzhitingzhigebieshiyanshidejiancehuodong。yinci,shiyanshiyingjiangchaonenglifanweijiancedehouguoxiangmeiyiweiyuangongxuanchuan,bunengweijingjiliyihuosuoweideweiqiyezhexiangerguyichaonenglifanweijiance;同時實驗室還應認真梳理實驗室的能力範圍,對確實有設備、具備檢驗能力而不在能力範圍內的標準,應盡快進行擴項,提高為企業服務的能力。近jin年nian來lai,不bu管guan是shi產chan品pin標biao準zhun還hai是shi方fang法fa標biao準zhun,標biao準zhun的de變bian更geng非fei常chang頻pin繁fan。按an照zhao實shi驗yan室shi資zi質zhi認ren定ding評ping審shen準zhun則ze的de規gui定ding,實shi驗yan室shi使shi用yong的de文wen件jian必bi須xu是shi現xian行xing有you效xiao的de,因yin此ci,實shi驗yan室shi不bu能neng使shi用yong作zuo廢fei標biao準zhun開kai展zhan檢jian測ce工gong作zuo。實shi驗yan室shi采cai用yong新xin標biao準zhun開kai展zhan工gong作zuo,則ze必bi須xu及ji時shi到dao實shi驗yan室shi資zi質zhi認ren定ding和he/或CNAS認ren可ke的de發fa證zheng機ji構gou進jin行xing標biao準zhun變bian更geng。目mu前qian,有you的de實shi驗yan室shi怕pa麻ma煩fan,往wang往wang等deng到dao複fu評ping審shen或huo監jian督du評ping審shen時shi才cai進jin行xing標biao準zhun變bian更geng。在zai新xin標biao準zhun開kai始shi實shi施shi到dao通tong過guo實shi驗yan室shi複fu評ping審shen或huo監jian督du評ping審shen之zhi間jian如ru果guo按an新xin標biao準zhun開kai展zhan檢jian驗yan工gong作zuo,則ze是shi超chao範fan圍wei檢jian驗yan。還(hai)有(you)一(yi)種(zhong)隱(yin)性(xing)超(chao)能(neng)力(li)範(fan)圍(wei)的(de)情(qing)形(xing)。實(shi)驗(yan)室(shi)通(tong)過(guo)的(de)檢(jian)驗(yan)能(neng)力(li)範(fan)圍(wei)時(shi),實(shi)際(ji)隱(yin)含(han)的(de)意(yi)思(si)是(shi)包(bao)括(kuo)產(chan)品(pin)標(biao)準(zhun)中(zhong)引(yin)用(yong)標(biao)準(zhun)也(ye)通(tong)過(guo)實(shi)驗(yan)室(shi)評(ping)審(shen)。當(dang)其(qi)引(yin)用(yong)標(biao)準(zhun)出(chu)現(xian)標(biao)準(zhun)變(bian)更(geng)尤(you)其(qi)是(shi)檢(jian)驗(yan)方(fang)法(fa)、huanjingsheshiyoushijibianhuadeqingkuangxia,qichanpinjianyandeshijijianyannengliyoukenengchuxianbianhua。zhezhongbianhua,kenenghuidaozhishiyanshibunenganxianxingyouxiaobiaozhunzhengchangkaizhanjianyangongzuo。womenbazhezhongbianhuachengzhiwei“隱性的”超範圍檢驗。由you於yu標biao準zhun變bian更geng後hou需xu要yao重zhong新xin進jin行xing能neng力li確que認ren,個ge別bie實shi驗yan室shi怕pa麻ma煩fan,往wang往wang會hui等deng到dao監jian督du評ping審shen或huo複fu評ping審shen時shi才cai進jin行xing確que認ren,從cong而er導dao致zhi超chao能neng力li範fan圍wei檢jian驗yan。因yin此ci,實shi驗yan室shi應ying關guan注zhu和he避bi免mian這zhe種zhong情qing況kuang的de發fa生sheng,在zai能neng力li未wei確que認ren前qian,不bu得de使shi用yong新xin標biao準zhun開kai展zhan檢jian驗yan。對dui於yu產chan品pin標biao準zhun中zhong引yin用yong標biao準zhun的de變bian更geng,實shi驗yan室shi更geng應ying關guan注zhu,以yi免mian采cai用yong作zuo廢fei標biao準zhun開kai展zhan檢jian驗yan而er造zao成cheng檢jian驗yan結jie果guo的de誤wu判pan和he可ke能neng帶dai來lai的de檢jian驗yan風feng險xian。
很多實驗室通過了CNASrenke,yetongguoleshiyanshizizhirending,erzhelianggerenkebuzaitongyishijianjinxingrenke,dangshenqingkuoxianghuobiaozhunbiangengshi,wangwangshiyigetongguole,erlingyigehaiyaoguoduanshijiancairenke。youbufenshiyanshiyouqishibufenzhongxiaoshiyanshi,qudenenglifanweiyiCMA為主,CNASdenenglifanweihenxiao,erjianyanbaogaodefengmianyibanshijiangjigebiaoshijunzhijieyinzaifengmianshang,zheshideshiyanshiwuyongbiaoshi。yinci,shiyanshiyingantongguodenenglifanweifenbieyinzhijianyanfengmian,anguidingshiyong。
shebeijihuanjingsheshishishiyanshikaizhanjianyandebibeigongju,shebeijihuanjingsheshishifoumanzubiaozhun,jiangzhijieyingxiangshujudezhunquexing,duijianyanjieguohepandingyouzhongdayingxiang。shebeijihuanjingsheshibunengmanzuyaoqiudeyuanyinzhuyaoyou:
yiqishebeideliangzhisuyuanshibaozhengqiceliangzhunquexingdezhuyaoshouduanzhiyi,anzhaoshiyanshizizhirendingpingshenzhunzeyaoqiu,yiqishebeishiyongqianyingjingguojiandinghuoxiaozhun,biyaoshi,zaiercijiandinghuoxiaozhunzhijianyingjinxingqijianhezha,yibaozhengshujudezhunquexing。danbufenshiyanshiweianguidingjiangyiqisongjiliangbumenjinxingjiandinghuoxiaozhun,zaochengyiqishizhun,haiyougebiejianding/校準實驗室不經檢定/xiaozhunjiuchujuzhengshu。shiyanshineijingchanghuiyouyiqishebeishimeiyoujiandingguichenghuoxiaozhunfangfa,jiliangbumenwangwangtushengshi,jinduiyiqishiyongdejiliangqijujinxingjiandinghuoxiaozhun,erqizongtishebeishifouhegezebuzuozonghepanding,shideshebeixianshideshujushifouzhunquebudeerzhi。ruguocishibucaiyongnengliyanzhenghuoshiyanshibiduidefangfaduiyiqijinxingyanzheng,zehuidailaihendadefengxian。有you的de檢jian驗yan機ji構gou,尤you其qi是shi中zhong小xiao型xing檢jian驗yan機ji構gou,由you於yu資zi金jin的de不bu足zu,使shi得de設she備bei長chang期qi服fu役yi,得de不bu到dao及ji時shi更geng新xin。由you於yu設she備bei使shi用yong年nian限xian過guo長chang,或huo使shi用yong環huan境jing惡e劣lie,設she備bei的de精jing度du下xia降jiang,檢jian驗yan數shu據ju的de可ke信xin度du下xia降jiang。因yin此ci,實shi驗yan室shi應ying及ji時shi更geng新xin設she備bei,當dang設she備bei一yi時shi不bu能neng更geng新xin,應ying增zeng加jia校xiao準zhun的de頻pin次ci、做期間核查、采用實驗室間比對或設備間比對等方式驗證設備的可靠性,以保證檢測數據準確可靠。
henduoshiyanduihuanjingsheshideyaoqiushihengaode,duijianyanjieguodeyingxianghenda,danbufenjianyanjigouduihuanjingsheshibushihenzhongshi,bunenghenhaodimanzujianyandeyaoqiu。ru:水泥檢驗的水養護,水的溫度規定為(20±1)℃,超(chao)出(chu)標(biao)準(zhun)規(gui)定(ding)的(de)溫(wen)度(du)範(fan)圍(wei),尤(you)其(qi)是(shi)超(chao)出(chu)溫(wen)度(du)較(jiao)多(duo)時(shi),對(dui)檢(jian)驗(yan)結(jie)果(guo)影(ying)響(xiang)就(jiu)會(hui)很(hen)大(da)。而(er)我(wo)們(men)在(zai)評(ping)審(shen)中(zhong)發(fa)現(xian),部(bu)分(fen)水(shui)泥(ni)實(shi)驗(yan)室(shi)中(zhong),水(shui)養(yang)護(hu)都(dou)是(shi)在(zai)水(shui)池(chi)中(zhong)進(jin)行(xing),水(shui)溫(wen)低(di)了(le)加(jia)熱(re)水(shui),水(shui)溫(wen)高(gao)了(le)加(jia)冷(leng)水(shui),這(zhe)樣(yang)的(de)溫(wen)控(kong)方(fang)式(shi)無(wu)法(fa)保(bao)證(zheng)水(shui)溫(wen)控(kong)製(zhi)精(jing)度(du),其(qi)養(yang)護(hu)後(hou)的(de)檢(jian)測(ce)數(shu)據(ju)也(ye)是(shi)不(bu)準(zhun)確(que)的(de)。因(yin)此(ci),對(dui)環(huan)境(jing)設(she)施(shi)要(yao)求(qiu)高(gao)的(de)試(shi)驗(yan),實(shi)驗(yan)室(shi)應(ying)確(que)保(bao)檢(jian)測(ce)的(de)環(huan)境(jing)設(she)施(shi)符(fu)合(he)標(biao)準(zhun)要(yao)求(qiu)。
由於檢測過程不規範而產生的檢驗結論不正確或數據不準確也時有發生,主要表現在:
檢jian驗yan是shi一yi個ge需xu要yao專zhuan注zhu的de過guo程cheng,稍shao有you疏shu忽hu,就jiu容rong易yi出chu現xian差cha錯cuo。而er隨sui著zhe手shou機ji的de普pu及ji,檢jian驗yan過guo程cheng中zhong,檢jian驗yan人ren員yuan在zai檢jian驗yan或huo檢jian驗yan後hou的de數shu據ju計ji算suan過guo程cheng中zhong接jie聽ting手shou機ji的de現xian象xiang非fei常chang普pu遍bian,如ru此ci以yi及ji其qi他ta的de粗cu心xin造zao成cheng檢jian驗yan失shi誤wu的de案an例li也ye時shi有you發fa生sheng。檢jian驗yan和he計ji算suan過guo程cheng中zhong粗cu心xin大da意yi造zao成cheng的de檢jian驗yan失shi誤wu雖sui不bu常chang見jian,但dan一yi旦dan出chu現xian這zhe種zhong情qing況kuang,將jiang直zhi接jie導dao致zhi檢jian驗yan結jie果guo出chu現xian差cha錯cuo。一般而言,每一種物質都有其自身特性,其檢測數據應在一定範圍,如,苯板的導熱係數不可能為0,caiyongbutonglvhejinjianzhuxingcaiheputongdancengbolidejianzhuwaichuangbukenengdadaobaowenchuangdeyaoqiudengdeng。dangjianyanrenyuanhuojianyanbaogaodepizhunrenyuanfaxianbufuheyibanguilvdekeyishujushi,yingduikeyishujujinxingfuhe,bingzhaqingshifouyiqishebeiyouwentihuojianyanrenyuancaozuoshiwu。nenggouzhengquepanduanshujushifoukeyi,shijianlizaiduibeijiancechanpindelilunhejianceshijianyoudaliangjileidejichushang,zheyeshiyigechengshudejianyanrenyuan,jianyanbaogaoshenhe、批準人員應有的基本素質,沒有長期訓練,是不可能敏感地察覺檢驗數據可疑的。在檢驗過程中,由於測量不確定度的存在,可能會導致檢驗項目在臨界值的判斷時有偏差。例如:塗層厚度,對於普通裝飾用鋁塑板,由於塗層厚度相對較小,測量時“0”點的精確校準對於處在標準規定的臨界狀態的產品而言顯得尤為重要。如果用普通標準基板進行調0,則可能出現(1~2)um的偏差,這將可能導致產品由“合格”滑向“不合格”邊緣。對於普通裝飾用鋁塑板,可以將產品除去塗層,在其裸露的基材上進行調0,yibaozhengjieguodezhunquekeguanxing。yinci,duiyuyoulinjiezhidejianyanjieguo,yingzuzhiyoubutongjianyanrenyuanhuozheyiqishebeijinxingduocidebiduishiyan,quebaojianyanjieguokexuegongzheng。檢驗是一項很嚴謹的工作,個別檢驗人員對於標準的理解和使用不正確也直接影響了檢驗結果的準確性。例如:氟碳塗層普通裝飾板檢測,GB/T22412-2008規定,對於氟碳塗層普通裝飾用鋁塑板,其塗層性能的檢測應按照GB/T17748-2008進行。試驗中往往容易將“普通裝飾用”的概念先入為主,而忽略了“其為氟碳塗層”的事實,導致采用檢驗標準不正確,最終導致檢驗結果失效。
近jin年nian來lai,許xu多duo檢jian驗yan機ji構gou開kai展zhan了le新xin一yi輪lun的de擴kuo張zhang,使shi得de有you經jing驗yan的de檢jian驗yan人ren員yuan嚴yan重zhong缺que乏fa,個ge別bie實shi驗yan室shi新xin進jin人ren員yuan僅jin僅jin通tong過guo幾ji個ge月yue的de培pei訓xun就jiu上shang崗gang開kai展zhan檢jian驗yan工gong作zuo,這zhe類lei檢jian驗yan員yuan對dui檢jian驗yan不bu太tai熟shu練lian,對dui異yi常chang數shu據ju缺que乏fa敏min感gan,而er又you對dui這zhe類lei人ren員yuan缺que乏fa有you效xiao的de監jian督du,使shi得de他ta們men出chu現xian錯cuo誤wu的de可ke能neng性xing遠yuan遠yuan超chao過guo成cheng熟shu員yuan工gong。因yin此ci,使shi用yong經jing驗yan不bu足zu而er又you缺que少shao監jian督du的de新xin上shang崗gang檢jian驗yan員yuan,潛qian在zai風feng險xian較jiao大da。因yin此ci,要yao按an照zhao實shi驗yan室shi資zi質zhi認ren定ding評ping審shen準zhun則ze的de要yao求qiu,對dui使shi用yong在zai培pei人ren員yuan應ying有you足zu夠gou的de監jian督du。實shi驗yan室shi在zai使shi用yong新xin上shang崗gang人ren員yuan或huo轉zhuan崗gang人ren員yuan時shi,除chu應ying考kao核he上shang崗gang外wai,檢jian驗yan時shi實shi驗yan室shi監jian督du員yuan應ying加jia強qiang監jian督du,防fang止zhi出chu現xian檢jian驗yan失shi誤wu。
檢(jian)驗(yan)原(yuan)始(shi)記(ji)錄(lu)不(bu)規(gui)範(fan),雖(sui)然(ran)不(bu)會(hui)改(gai)變(bian)檢(jian)驗(yan)結(jie)果(guo),但(dan)原(yuan)始(shi)記(ji)錄(lu)是(shi)實(shi)驗(yan)室(shi)檢(jian)驗(yan)過(guo)程(cheng)的(de)證(zheng)明(ming)材(cai)料(liao),一(yi)旦(dan)實(shi)驗(yan)室(shi)與(yu)檢(jian)驗(yan)委(wei)托(tuo)方(fang)或(huo)相(xiang)關(guan)第(di)三(san)方(fang)發(fa)生(sheng)糾(jiu)紛(fen)時(shi),檢(jian)驗(yan)原(yuan)始(shi)記(ji)錄(lu)就(jiu)不(bu)能(neng)起(qi)到(dao)證(zheng)據(ju)的(de)作(zuo)用(yong),將(jiang)實(shi)驗(yan)室(shi)置(zhi)於(yu)危(wei)險(xian)境(jing)地(di)。每(mei)個(ge)實(shi)驗(yan)室(shi)都(dou)會(hui)按(an)實(shi)驗(yan)室(shi)資(zi)質(zhi)認(ren)定(ding)評(ping)審(shen)準(zhun)則(ze)的(de)規(gui)定(ding),製(zhi)訂(ding)自(zi)己(ji)的(de)記(ji)錄(lu)管(guan)理(li)規(gui)定(ding),但(dan)個(ge)別(bie)實(shi)驗(yan)室(shi)不(bu)能(neng)很(hen)好(hao)地(di)執(zhi)行(xing),表(biao)現(xian)在(zai):
檢驗原始記錄最基本的要求是將觀察到的情況、數據加以記錄,這裏指的觀察到的情況包括從樣品的準備、處置和製備開始到檢驗結束所觀察到的全過程。實驗室往往對檢驗過程觀察到的情況記錄比較詳細,但對樣品的準備、處置和製備過程,如樣品在恒溫恒濕間的等溫過程、水泥的水養護過程等過程記錄不全,甚至不予記錄。按照“實驗室記錄應及時、準確、完整”的要求,檢驗樣品的準備、處置和製備,也是檢驗的過程,也應及時、準確、完整地加以記錄,同時,對檢驗員要加強教育,要有完整準確地記錄原始記錄的意識。檢jian驗yan後hou的de計ji算suan過guo程cheng中zhong往wang往wang需xu要yao引yin用yong一yi些xie常chang數shu或huo係xi數shu。所suo有you引yin用yong數shu據ju都dou應ying有you出chu處chu,常chang數shu主zhu要yao是shi標biao準zhun中zhong給gei出chu,係xi數shu則ze是shi在zai檢jian驗yan前qian作zuo出chu標biao準zhun曲qu線xian後hou得de出chu,標biao準zhun曲qu線xian不bu是shi做zuo出chu一yi次ci後hou永yong遠yuan使shi用yong,而er是shi應ying定ding期qi做zuo標biao準zhun曲qu線xian,因yin此ci,在zai使shi用yong標biao準zhun曲qu線xian時shi,應ying在zai原yuan始shi記ji錄lu中zhong附fu上shang本ben次ci檢jian測ce使shi用yong的de標biao準zhun曲qu線xian或huo注zhu明ming標biao準zhun曲qu線xian編bian號hao。而er有you的de實shi驗yan室shi在zai記ji錄lu原yuan始shi記ji錄lu時shi,並bing不bu將jiang標biao準zhun曲qu線xian附fu在zai原yuan始shi記ji錄lu中zhong或huo在zai原yuan始shi記ji錄lu中zhong注zhu明ming出chu處chu,使shi其qi引yin用yong的de數shu據ju不bu具ju有you可ke追zhui溯su性xing。因yin此ci,檢jian驗yan人ren員yuan在zai記ji錄lu檢jian驗yan原yuan始shi記ji錄lu時shi,應ying將jiang引yin用yong的de標biao準zhun曲qu線xian附fu在zai原yuan始shi記ji錄lu中zhong,或huo將jiang引yin用yong的de標biao準zhun曲qu線xian的de編bian號hao在zai原yuan始shi記ji錄lu中zhong注zhu明ming,使shi得de原yuan始shi記ji錄lu中zhong的de引yin用yong數shu據ju具ju有you可ke追zhui溯su性xing。
jianyanyuanshijilushiyuanshideguanchajilu,yinggaizaiguanchashishishijilu,youxiejianyanyuanchuyuzijibaoliushujudeyuanyin,yeyouxiejianyanyuanchuyubaochiyuanshijiluganjingzhengjiedeyuanyin,yangchenglejiangyuanshijiluxianjiluzaibijibenshang,guohouzaizhuanchaodaogeshihuadeyuanshijilushang。yinci,shiyanshiyoubiyaoyaoqiujianyanrenyuanjiangjilujishijiluzaishoukongdegeshihuadeyuanshijilubiaoshizhong,budexianjiluzaibijibenshangranhouzhuanchaodaogeshihuadeyuanshijilushang。
檢(jian)驗(yan)報(bao)告(gao)是(shi)檢(jian)驗(yan)機(ji)構(gou)交(jiao)給(gei)客(ke)戶(hu)的(de)最(zui)終(zhong)產(chan)品(pin),因(yin)此(ci)檢(jian)驗(yan)報(bao)告(gao)質(zhi)量(liang)也(ye)應(ying)該(gai)是(shi)實(shi)驗(yan)室(shi)重(zhong)點(dian)關(guan)注(zhu)的(de)內(nei)容(rong)之(zhi)一(yi)。檢(jian)驗(yan)報(bao)告(gao)的(de)錯(cuo)誤(wu)通(tong)常(chang)有(you)以(yi)下(xia)兩(liang)種(zhong)表(biao)現(xian):
檢驗報告編製人員在編製檢驗報告過程中,經常會因為疏忽出現輸入性錯誤,如:技術要求、實測數據、單項判定等文字或數字輸入錯誤,造成誤判;委托檢驗日期、樣品生產日期、jianyanriqidengriqishurucuowu,zaochengshijianluojishangdewenti。dangqian,juedaduoshushiyanshidoucaiyongyewuguanliwangluoxitongbianzhijianyanbaogao,duiyushijianluojishangdewenti,keyitongguozaixitongshangjinxingshijianguanliantixingshezhi,duibufuheluojideshijianjinxingtixing,keyouxiaofangzhishijianluojicuowu;對其他輸入性錯誤,則要通過加強報告編製人員和審核、批準人員的責任心來解決。按照實驗室資質認定的要求,檢驗報告的簽發應由授權簽字人簽發。授權簽字人應對檢測技術、結果評定、設備維護校準、記錄和報告核查程序等非常熟悉,因此,授權簽字人的授權簽字的能力範圍、試(shi)驗(yan)地(di)址(zhi)範(fan)圍(wei)是(shi)有(you)限(xian)製(zhi)的(de)。在(zai)實(shi)驗(yan)室(shi)運(yun)作(zuo)過(guo)程(cheng)中(zhong),部(bu)分(fen)非(fei)授(shou)權(quan)簽(qian)字(zi)人(ren)簽(qian)發(fa)檢(jian)驗(yan)報(bao)告(gao),或(huo)授(shou)權(quan)簽(qian)字(zi)人(ren)不(bu)了(le)解(jie)自(zi)己(ji)的(de)授(shou)權(quan)簽(qian)字(zi)能(neng)力(li)範(fan)圍(wei)或(huo)試(shi)驗(yan)地(di)址(zhi)範(fan)圍(wei),超(chao)越(yue)授(shou)權(quan)範(fan)圍(wei)簽(qian)發(fa)檢(jian)驗(yan)報(bao)告(gao),造(zao)成(cheng)檢(jian)驗(yan)報(bao)告(gao)的(de)錯(cuo)誤(wu)。這(zhe)種(zhong)超(chao)越(yue)能(neng)力(li)範(fan)圍(wei)批(pi)準(zhun)檢(jian)驗(yan)報(bao)告(gao),違(wei)反(fan)了(le)實(shi)驗(yan)室(shi)標(biao)識(shi)使(shi)用(yong)的(de)規(gui)定(ding),會(hui)使(shi)檢(jian)驗(yan)報(bao)告(gao)失(shi)去(qu)法(fa)律(lv)效(xiao)力(li)。