所加的反应物可以是二烯烃 、 环二烯烃.The feed reactants can be alkadienes, cycloalkadienes.包含两个双键的化合物叫做二烯烃.Compounds containing two double bonds are called dienes.与二烯烃橡胶相比, EPDM的双键很少.Compared with diolefine rubber, EPDM has less double b...
speak in a halting way说话吞吞吐吐The old woman's halting steps revealed the feebleness of her constitution.老人家蹒跚的脚步显出她体质衰弱.The officer replied in halting German...这位官员用结结巴巴的德语作答。He moderates his assent with the halting a...
He started his career in show business by playing the saxophone and singing.他的演艺生涯是从吹奏萨克斯和唱歌开始的。He took a saxophone from the Salvation Army but was caught and had to hand it back.他从救世军那里拿了一支萨克斯管，但却被抓住了，只得将其交还。to play the...
永磁起重器是起重工具的一种.Permanent Magnet Lifter is a kind of lifting gear.电永磁起重器是当前国际上流行的新型磁力器件.Electropermanent lift magnet is a new type of magnetic force device.可根据客户需要制作其它尺寸的永磁起重器.Dimension can be changed if client requiring....