crescent vacuum stopcock
月牙型真空柱塞
Buy High Vacuum Stopcock bor.
捷克求购高硼玻璃管。
jar with ground in stopcock, bell
带磨砂玻璃旋塞的钟罩
Dropping funnel with tip under stopcock.
下端带旋塞的滴液漏斗
A regulated opening for discharging a liquid, as in a stopcock.
控制通过入口的液体量的阀。
Application of Eccentric Stopcock in Descaling System of Steel Rolling
偏心旋塞阀在轧钢除鳞系统中的应用
The main neck is fitted with the dropping funnel with its stopcock open.
然后在主颈上固定滴液漏斗，且滴液漏斗的活塞需打开。
Its structure and elevates the short festival including the high and low stopcock.
其结构包括上下旋塞阀和升高短节。
When the stopcock is opened, water flows from the top of the warmer column into the colder column.
打开活塞后，水即由较热的水柱顶端流入较冷的水柱。
Then the dropping funnel stopcock is closed and vigorous stirring is the continued for a further 30min.
之后，关闭滴液漏斗活塞并继续用力搅拌30分钟。
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