梅尔维尔在《白鲸 》 中汇集了各种捕鲸知识.Melville incorporated in " Moby Dick " an exhaustive encyclopaedia of whaling lore.《白鲸》是世界上一部伟大的小说, 越读越觉得它有味道.Moby Dick is one of the world's great novels, whose richness increases with each ne...
BUNa - N is a general purpose oil resistant polymer known as nitrile rubber.丁腈橡胶(BUNa-N )是一种多用途抗油品腐蚀聚合物,称为腈橡胶.Leather, rubber and wire are flexible.皮革、橡皮和电线都是易弯曲的。A synthetic rubber made from the polymerization of butadi...