Paraffins have high diesel indices.链烷烃的柴油指数最高.Objective To explore the biological exposure indices ( BEI ) of dimethylformamide ( DMF ) in China.目的探讨我国二甲基甲酰胺 ( DMF ) 的生物接触限值 ( BEI )....economic indices.经济指数Indices of emp...
European Spruce and Maple for musical instruments. Red Cedar tops, Mahogany, Zebrawood and many more.制作乐器的欧洲云杉和枫木, 上等红雪松, 桃花心木, 热带美洲产木材等等.The floor was made of polished red cedar wood.这个地板是用抛光过的红衫木制成的.Hemlock, red cedar,...