It was a perfection of a valve that made the aqualung possible and put man back into the sea with all the freedom of a fish.
是阀的完善使研究水中呼吸器成为可能，并将人类送到海里，使其象鱼一样自由。
Open the upper sea inlet valve and close the lower one.
打开高位海底阀，关闭低位海底阀。
The precious jade set connects Milky Way, temple valve deep sea.
瑶台连云汉，宫阀深似海。
Subsea valve: a valve which is designed for use in sea water.
海底阀：为适应海水中作业而设计的一种阀。
The jade ring gold porch valve Limited company is situated at shore, the Chinese valve the East China Sea, the hot-water heat valve to purchase the base------Zhejiang jade ring;
玉环金廊阀门有限公司地处东海之滨、中国阀门之都、水暖阀门采购基地------浙江玉环；
Three sea anemones sitting on the aortic valve.
三海葵在主动脉瓣。
Three sea anemones sitting on the aortic valve.
三海葵在主动脉瓣。
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