The volume of the breathing apparatus is small.The weight of it is light.The operation is simple.It is on the safe side and comportable for the wearer.
器具有体积小、重量轻、操作简单、安全可靠、面罩视野宽阔、气密性好。
The volume of the breathing apparatus is small.The weight of it is light.The operation is simple.It is on the safe side and comportable for the wearer.
器具有体积小、重量轻、操作简单、安全可靠、面罩视野宽阔、气密性好。
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