... check relief valve 单向安全阀 check-valve obstruction 止回阀阻塞 check-valve nozzle 止回阀喷嘴 ; 止回阀喷嘴儿 ...
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The mechanism is believed to be a combination of parenchymal necrosis and check-valve airway obstruction.
发病机制是实质坏死和活瓣性气道阻塞的综合作用。
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