The patent reads: A self-contained open-circuit breathing apparatus for use within a body of water naturally containing dissolved air.
这项专利实质如下:一个孤立的绽放使用的电路呼吸器内的水固然含有溶气机构。
The patent reads: A self-contained open-circuit breathing apparatus for use within a body of water naturally containing dissolved air.
这项专利实质如下:一个孤立的绽放使用的电路呼吸器内的水固然含有溶气机构。
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