positive pressure head 中文意思是什麼
positive pressure head
解釋
正壓頭-
A silicone oil bubbler provides a positive gas pressure head inside the growth tube at all times.
硅酮油起泡器能始終在生長管內產生一正氣壓位差。 -
Denis oswald, head of the ioc ' s co - ordination commission for the games said he was much more positive than he was only three months ago. however, he warned that his commission would continue to put pressure on athoc
國際奧委會協調委員會主席澤尼斯奧斯瓦爾德說,近三個月來雅典籌備工作的進展讓他對這屆奧運會信心大增。
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