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Underwater respiratory device comprises reservoir and air charging pump and hollow structure which can be filled or emptied of gas to make it either floating or submersible
Underwater respiratory device comprises reservoir and air charging pump and hollow structure which can be filled or emptied of gas to make it either floating or submersible
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机译:水下呼吸装置包括储气罐,充气泵和中空结构,可填充或排空气体以使其漂浮或浸入水中
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摘要
The underwater respiratory device comprises reservoir (2) and an air charging pump (3). A hollow structure (8) can be filled with or emptied of gas to make the device either floating on the surface of the water or submersible.
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