parts by weight 这个浓度单位是多少呢?原文 Alum should be present in concentrations varying between 56 to 790 parts by weight.

parts by weight 这个浓度单位是多少呢?原文 Alum should be present in concentrations varying between 56 to 790 parts by weight. parts在化学剂量中怎么理解如5-35 parts by weight of antimony pentoxide.前面涉及主要成分是100parts,“100 parts by weight of a principal constituent composed of a halogen-containing polymeric substance and polyvinyl alcohol in a wei 900ppm by weight by weight by the kilogram concen-tration percent by weight The first machine made us give children toys by weight.这个怎么翻译 为什么是by weight而不是bu the weight? 组合这个英语句子（加汉语意思)you changes a start can losing weight by making few right now Quantity(weight):…………….WMT by Container with partial shipment.这个怎么翻译啊? 100 gloves by weight 求翻译 apples are often sold ____ in the market.A.in weight .B.by the weight .C.by weight 英语翻译Dear all,Kindly maintain the weight of all parts of NAL60 so that no error message showed when dumping data by 9/11.Thank you.Dear sourcers/buyers,Kindly maintain related information in SAP,such as vendor data and etc.Thank you all very m Seeing Fang Fang geting so fat ,her sistersuggested she ( )by taking this medicineA.lose weight B.to lose weight C.will lose weight D.loses weight 英语翻译:这个lose weight怎么造句? Weight 这个单词的形容词是?``` weight-lifting这个单词怎么读 翻译rewrite the following sentences by paraphrasing the underlined parts b___ to divided into parts by force;to destroy