21.certificate on performance tests of packing 包裝性能檢驗證書
performance n.（常與of連用）表現(xiàn)性能；能力；成績，工作成果表演；扮演；演奏
Her performance in the play was very good.她在劇中的表演非常好。
The performances are on the 5th and 6th of this month.劇的）上演是在這個月的5號和6號。
packing n.包裝, 打包; 裝箱
22.certificate for doping silk classification and conditioned weight
雙宮絲品級及公量檢驗證書
duping n.[紡]雙宮絲
classification n.分類, 分級
account classification帳戶（科目）分類
activity classification業(yè)務(wù)活動分類
conditioned weight n. 公量
23.certificate for raw silk classification conditioned weight 生絲品級公量檢驗證書
raw silk n.生絲
24.certificate for spun silk yarn quality 絹絲品質(zhì)檢驗證書
spun silk n.絹絲
yarn n.紗, 紗線, 故事, 奇談
quality n. -ties品質(zhì)；性質(zhì)
a watch of good quality品質(zhì)好的手表
This new model is of high quality and is not expensive either.這種新型號質(zhì)量非常好,而且也不貴。
a poor quality of cloth品質(zhì)低劣的布料
qualities of leadership領(lǐng)導(dǎo)才能
25.certificate for thrown silk classification and conditioned weight 捻線絲品級及公量檢驗證書
thrown throw的過去分詞
thrown silk 捻線絲
26.certificate of aflatoxin 黃曲霉毒素檢驗證書
aflatoxin n.[生化]黃曲霉毒素
27.certificate of analysis 分析檢驗證書
analysis n.-ses分析；分解
chemical analysis化學(xué)分析
an analysis of the milk對牛奶的分析
The analysis of the samples on the murder spot showed some valuable clues to the police.對謀殺現(xiàn)場標(biāo)本的分析為警察提供了一些有價值的線索。
28.certificate of cargo G.A. 共同海損鑒定證書
cargo n.船、飛機(jī) 所載的）貨物
We sailed from Perth with a cargo of raw ion.我們裝著一船生鐵從佩思啟航。
a cargo of cotton 船棉花
a cargo of oil 飛機(jī)油
29.certificate of depth 深度檢驗證書
depth n.深度；濃度；深
What is the depth of the well?這口井的深度是多少？
Nobody knew the depth of her love for the child.誰也不知道她對這孩子的愛有多深。
中央；中間
in the depths of winter在隆冬
30.certificate of disinfection 消毒檢驗證書
disinfection n.消毒(作用); 滅菌(作用)
performance n.（常與of連用）表現(xiàn)性能；能力；成績，工作成果表演；扮演；演奏
Her performance in the play was very good.她在劇中的表演非常好。
The performances are on the 5th and 6th of this month.劇的）上演是在這個月的5號和6號。
packing n.包裝, 打包; 裝箱
22.certificate for doping silk classification and conditioned weight
雙宮絲品級及公量檢驗證書
duping n.[紡]雙宮絲
classification n.分類, 分級
account classification帳戶（科目）分類
activity classification業(yè)務(wù)活動分類
conditioned weight n. 公量
23.certificate for raw silk classification conditioned weight 生絲品級公量檢驗證書
raw silk n.生絲
24.certificate for spun silk yarn quality 絹絲品質(zhì)檢驗證書
spun silk n.絹絲
yarn n.紗, 紗線, 故事, 奇談
quality n. -ties品質(zhì)；性質(zhì)
a watch of good quality品質(zhì)好的手表
This new model is of high quality and is not expensive either.這種新型號質(zhì)量非常好,而且也不貴。
a poor quality of cloth品質(zhì)低劣的布料
qualities of leadership領(lǐng)導(dǎo)才能
25.certificate for thrown silk classification and conditioned weight 捻線絲品級及公量檢驗證書
thrown throw的過去分詞
thrown silk 捻線絲
26.certificate of aflatoxin 黃曲霉毒素檢驗證書
aflatoxin n.[生化]黃曲霉毒素
27.certificate of analysis 分析檢驗證書
analysis n.-ses分析；分解
chemical analysis化學(xué)分析
an analysis of the milk對牛奶的分析
The analysis of the samples on the murder spot showed some valuable clues to the police.對謀殺現(xiàn)場標(biāo)本的分析為警察提供了一些有價值的線索。
28.certificate of cargo G.A. 共同海損鑒定證書
cargo n.船、飛機(jī) 所載的）貨物
We sailed from Perth with a cargo of raw ion.我們裝著一船生鐵從佩思啟航。
a cargo of cotton 船棉花
a cargo of oil 飛機(jī)油
29.certificate of depth 深度檢驗證書
depth n.深度；濃度；深
What is the depth of the well?這口井的深度是多少？
Nobody knew the depth of her love for the child.誰也不知道她對這孩子的愛有多深。
中央；中間
in the depths of winter在隆冬
30.certificate of disinfection 消毒檢驗證書
disinfection n.消毒(作用); 滅菌(作用)