按自身形态可分为固定式气体报警器和便携式气体检测仪。

May divide into the stationary gas alarm apparatus and the portable gas instrumentation according to own shape.

youdao

按自身形态可分为固定式气体报警器和便携式气体检测仪。

May divide into the stationary gas alarm apparatus and the portable gas instrumentation according to own shape.

youdao