乙烯基

This paper discussed three methods of producting vinyl etherspreparation from acetylene ,dehydrohalogenation and acetals.

论述了乙烯基醚类化合物的三种主要制备方法乙炔法、脱卤化氢法和缩醛热分解法。

The single-source ceramic precursor is synthesized by dimethylsulphide borane and dichloromethylvinylsilane and then pyrolyzed. The problem of this path, the elimination of by-product, NH4Cl, is discussed.

本文以甲基乙烯基二氯硅烷和二甲硫醚硼烷为原料，采用聚合物前驱体高温裂解的方法制备了SiBCN陶瓷，并分析了该路径的难点，即副产物的分离。

By Al Kelly Carrell Columnists Vinyl siding is a very sturdy , long lasting material .

铝及凯利 Carrell |专栏乙烯基侧板是一个非常坚固的，持久的材料。

By Al Kelly Carrell Columnists Vinyl siding is a very sturdy , long lasting material .

铝及凯利 Carrell |专栏作家乙烯基侧板是一个非常坚固的，持久的材料。

Lead is also used in some ceramic and vinyl products, candles, hair colorings and other goods.

铅同时也用于一些陶器和乙烯基产品，蜡烛，染发剂和其他东西中。

Lead is also used in some ceramic and vinyl products, candles, hair colorings and other goods.

铅也可能被用于陶器、乙烯基产品、蜡烛、染发剂和其它产品中。

Lead is also used in some and products, candles, hair colorings and other goods.

铅也使用于陶瓷制品、乙烯基产品、蜡烛、染发制品和其他商品。

Lead is also used in some ceramic and vinyl products , candles , hair colorings and other goods .

也用于制造陶瓷，乙烯基产品，蜡烛，染发剂或其它产品。

It can also be found in toys and other products painted with lead-based paint. Lead is also used in some ceramic and vinyl products, candles, hair colorings and other goods.

它也可以在玩具上及其它用铅颜料画的产品上找到，也被用于某些陶器和乙烯基产品、蜡烛、染发剂和其它物品。

There are no domestic factories to produce vinyl ethers by now.

目前为止国内对乙烯基醚类及相关产品的开发尚处于起步阶段，更无工业化生产，对于MVE，国内目前还未见有文献介绍这方面的研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。