<***N lang=EN-US><***N style="mso-spacerun: yes">???? <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">實(shí)驗(yàn)用切紙刀或?qū)Ｓ貌脴悠鳎贸鲈嚇拥拿娣e與規(guī)定面積相比，要求每<***N lang=EN-US>100<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">次中至少有<***N lang=EN-US>95<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">次的偏差范圍在<***N lang=EN-US>+1%<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以內(nèi)。用<***N lang=EN-US>4.3.1<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的方法經(jīng)常校核設(shè)備。如已達(dá)到精度，用在校核試驗(yàn)中得到的平均面積計(jì)算定量。<***N lang=EN-US>

<***N lang=EN-US>4.2 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">試樣重<***N lang=EN-US>5g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以下的用精度<***N lang=EN-US>0.001g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平；<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">試樣重<***N lang=EN-US>5g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上的用精度<***N lang=EN-US>0.01g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平；<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">試樣重<***N lang=EN-US>50g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上的用精度<***N lang=EN-US>0.1g<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平或象限秤。<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">所用的天平或象限秤只按<***N lang=EN-US>4.3.2<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">進(jìn)行校核。<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">稱(chēng)重時(shí)應(yīng)防止氣流對(duì)稱(chēng)重裝置的影響。<***N lang=EN-US>

<***N lang=EN-US>4.3 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">儀器的校準(zhǔn)<***N lang=EN-US>

<***N lang=EN-US>4.3.1 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">切樣設(shè)備的校核<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">裁切面積應(yīng)經(jīng)常校核，切<***N lang=EN-US>20<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個(gè)試樣，并計(jì)算它們的面積應(yīng)達(dá)到<***N lang=EN-US>4.1<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中說(shuō)明的精度，當(dāng)各個(gè)面積的標(biāo)準(zhǔn)偏差小于平均面積的<***N lang=EN-US>0.5%<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">時(shí)，這個(gè)平均面積可用于以后試驗(yàn)的定量計(jì)算上，如標(biāo)準(zhǔn)偏差超過(guò)這個(gè)范圍，每個(gè)試樣的面積應(yīng)單個(gè)地測(cè)定。<***N lang=EN-US>

<***N lang=EN-US>4.3.2 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平的校核<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天平應(yīng)經(jīng)常用**標(biāo)準(zhǔn)砝碼進(jìn)行稱(chēng)量，加以校核，列出校正表。經(jīng)計(jì)量局校核的可以在有效檢定周期內(nèi)使用。<***N lang=EN-US>

<***N lang=EN-US>5 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">取樣<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">紙張及計(jì)量單位的選擇以及試樣的采取，應(yīng)按<***N lang=EN-US>GB/T 450<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方法進(jìn)行，采樣的數(shù)量應(yīng)不少于<***N lang=EN-US>5<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個(gè)，它們的總面積應(yīng)至少夠<***N lang=EN-US>20<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個(gè)試樣。<***N lang=EN-US>

<***N lang=EN-US>6 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">溫濕處理<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">試樣應(yīng)按<***N lang=EN-US>GB/T10739<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的要求進(jìn)行溫濕處理。<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如在絕干或其他溫濕條件下測(cè)定，報(bào)告結(jié)果應(yīng)說(shuō)明試樣在稱(chēng)重時(shí)的條件。<***N lang=EN-US>

<***N lang=EN-US>7 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">試樣步驟<***N lang=EN-US>

<***N lang=EN-US>7.1 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">沿紙幅縱向折疊成<***N lang=EN-US>1<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">層、<***N lang=EN-US>5<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">層或<***N lang=EN-US>10<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">層，然后沿橫向均勻切取<***N lang=EN-US>0.01 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">即<***N lang=EN-US>100mm 100mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的試樣至少<***N lang=EN-US>4<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">疊，**度為<***N lang=EN-US>0.1mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，若同時(shí)測(cè)定橫幅定量偏差，則應(yīng)盡量多取些。如有必要亦可切取<***N lang=EN-US>0.05 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">即<***N lang=EN-US>200mm 250mm <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的試樣，**度為<***N lang=EN-US>0.5mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。分別稱(chēng)取每疊試樣的質(zhì)量，按以上步驟至少?gòu)?/***N><***N lang=EN-US>5<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">張紙樣上，共切出<***N lang=EN-US>20<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">疊試樣。<***N lang=EN-US>

<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如切樣設(shè)備不能滿足精度要求，則應(yīng)測(cè)定每一個(gè)試樣的尺寸，計(jì)算出測(cè)量面積。<***N lang=EN-US>

<***N lang=EN-US>7.2 <***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寬度在<***N lang=EN-US>100mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以下的盤(pán)紙應(yīng)按卷盤(pán)全寬切取<***N lang=EN-US>5<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">條長(zhǎng)<***N lang=EN-US>300mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的紙條，一并稱(chēng)量，應(yīng)測(cè)量所稱(chēng)量紙條的長(zhǎng)邊及短邊，準(zhǔn)確至長(zhǎng)邊為<***N lang=EN-US>0.5mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，短邊為<***N lang=EN-US>0.1mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，然后計(jì)算面積?？刹捎镁葹?/***N><***N lang=EN-US>0.02mm<***N style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的游標(biāo)卡尺測(cè)量。