900ppm by weight

900ppm by weight by weight by the kilogram concen-tration percent by weight 英语翻译For applications where the hexavalent chromium is not leachable:A maximum concentration of 1000 ppm by weight and perhomogeneous material shall be tolerated.Test method:A test for total chromium (for example) can be used to determine that 为什么是by weight而不是bu the weight? ppM, 100 gloves by weight 求翻译 apples are often sold ____ in the market.A.in weight .B.by the weight .C.by weight 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 0 order by weight desc,selecttime desc LIMIT 选择：fish are sold ____while cloth is sold ____A.by the weights;by meters B.in weight;in metersC.in weight;by the meter D.by weight;by the meter you can't imagine that rats eat 40 to 50 times _____.A.in weight B.by weight C.of weight D.thier weight为什么选D，thier weight之前为什么不加介词 It is generally accepted that rats eat 40 to 50 times 为什么选Cit's generally accepted that rats eat 40 to 50 times____.A by weight B in weight C their weight D of their weight 英语It is generally accepted that rats eat 40 to 50 times 为什么选Cit's generally accepted that rats eat 40 to 50 times____.A by weight B in weight C their weight D of their weight 英语It is generally accepted that rats eat 40 to 50 times 为什么选Cit's generally accepted that rats eat 40 to 50 times____.A by weight B in weight C their weight D of their 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. Quantity(weight):…………….WMT by Container with partial shipment.怎么翻译啊? she watned to lose weight( )doing more exercise( ) 填 in on with by