英语语法分析

A theoretical model is introduced to explain the basic mechanism of semiconductive ceramics gas sensors.

本文试图对半导体陶瓷气敏元件的敏感机理提出理论模型。

Preparing the nickel electrode on PTCR semiconductive ceramics by thick-film firing method were researched.

对用厚膜烧成法在PTCR半导瓷上制备镍电极进行了研究。

Use of conductive or semiconductive layer of the cable electric closed in around the wire insulation layer.

用导电或半导电层把电缆的电场封闭在包围着导线的绝缘层中。