The mask may be coupled to a continuous flow of oxygen or may be used as a partial or non-rebreathing mask.

面罩可连接至连续的氧气流，或可用作为部分地或不可再呼吸的面罩。

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The mask may be coupled to a continuous flow of oxygen or may be used as a partial or non-rebreathing mask.

面罩可连接至连续的氧气流，或可用作为部分地或不可再呼吸的面罩。

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