工具脱离工件时，下防护装置必须自动回到覆盖位置。
The lower guard must automatically return to the covering position when the tool is withdrawn from the work.
介绍一种能自动记录、存档和打印检验报告，并具有很宽的检验范围的计算机、人工双控的新型劳动防护用品绝缘检验装置。
This paper introduces a new type of insulation testing device for labor protection, which has such functions as keeping records and archive, and automatically printing the testing report.
瓦斯加热，使用中因没瓦斯或其化因素未点燃时，自动警示与关闭瓦斯、安全防护装置。
Gas heating: Without gas or not burned for other reasons in use, it will alarm and turn off the gas automatically. Safety protection device.
瓦斯加热，使用中因没瓦斯或其化因素未点燃时，自动警示与关闭瓦斯、安全防护装置。
Gas heating: Without gas or not burned for other reasons in use, it will alarm and turn off the gas automatically. Safety protection device.
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