Acid rain, greenhouse effect, ozonosphere broken and environmental pollution, etc, do harm to man constantly, and so gas - sensors "research and development is very active".

酸雨、温室效应、臭氧层破环、环境污染等，不断危害着人类，从而，气体传感器的研究与开发十分的活跃。

youdao

Acid rain, greenhouse effect, ozonosphere broken and environmental pollution, etc, do harm to man constantly, and so gas - sensors "research and development is very active".

酸雨、温室效应、臭氧层破环、环境污染等，不断危害着人类，从而，气体传感器的研究与开发十分的活跃。

youdao