英语语法分析

The pertinent siloxane compounds contain two silicon hydride bonds.

所说的硅氧烷组合物中，含有两类硅氧键。

The pertinent siloxane compounds contain two silicon hydride bonds .

所说的硅氧烷组合物中，含有两类硅氧键。

Four new types of organic siloxane surfactants with quaternary ammonium group have been obtained.

通过多步骤合成了四种含有季铵基的有机硅表面活性剂。