英语语法分析

Catalytic effect of alkyl stannate on rosin esterification was studied. Factors affecting the esterification reaction are discussed in detail.

以松香树脂酸的酯化反应为例，研究了烷基锡酸对酯化反应的催化作用，系统的探讨了影响反应的各种因素。

The effects of zinc stannate on flame retardancy and smoke suppression of soft PVC were studied by means of LOI, TGA and smoke density measurement.

采用氧指数法、热重分析及烟密度测试法就锡酸锌对软质pvc的阻燃抑烟行为进行了研究。

The sodium stannate from slag containing tin is prepared directly by the process including alkali fusion, leaching, purification, concentration and crystallization.

以含锡渣为原料，采用碱熔—浸出—除杂—浓缩结晶工艺直接制取了锡酸钠产品。