Complete stoppering of the vials usually by hydraulic or screw rod stoppering mechanisms installed in the lyophilizers.
使用安装在冻干机内的液压装置或螺杆全加塞。
In order to minimize oil vapor migration, some lyophilizers are designed with a tortuous path between the vacuum pump and chamber.
为了最小化油蒸汽的回流，一些冻干机在真空泵和前箱间设计了弯曲的管路。
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