These units are recommended for use when clean air or inert gas environments are required in laboratory air, process control, instrument and compressed air systems.
这些单位建议，清洁的空气或惰性气体的环境是在实验室空气，过程控制，仪器仪表和压缩空气系统所要求的使用。
The existing gas meter which has no functions of gas leak alarm and control is only used as a measuring instrument for the use amount of the gas.
现有的燃气表没有燃气泄露报警泄漏控制功能，只是作为燃气使用数量的测量仪表。
The existing gas meter which has no functions of gas leak alarm and control is only used as a measuring instrument for the use amount of the gas.
现有的燃气表没有燃气泄露报警泄漏控制功能，只是作为燃气使用数量的测量仪表。
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