Always depressurize a regulator before closing the adjusting knob and removing the regulator from the cylinder.
在关闭调整钮和从钢瓶上断开调整器之前,调整器减压。
Always depressurize a regulator before closing the adjusting knob and removing the regulator from the cylinder.
在关闭调整钮和从钢瓶上断开调整器之前,调整器减压。
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