Development proposals of isoprene rubber in China were put forward.结合我国的实际情况,提出了发展我国异戊橡胶的几点看法.Isoprenoid ( terpene ): Class of organic compounds made up of two or more structural units derived from isoprene.类异戊间二烯化合物(亦称 ...
His criticism stuck out a mile to aim at us.他的批评显然是针对我们.They aim at quality rather than quantity.他们的目的在于提高质量而不是增加数量.I didn't know I was supposed to aim at the same spot all the time.我不知道自己应该一直瞄准同一目标。...