There are many factors affecting the characteristics of the suction-type metering device for precision drill. The important one is the vacuum degree or suction power of the vacuum chamber.
2
医生：在某些禁止吸烟的场所，如图书馆、剧院和办公室，你会觉得不吸。
Doctor: Do you find it difficult to refrain from smoking in places where it is forbidden such as the library, theater and office?
3
机器的中型灌装机是在实验室中经常使用的自动吸移管管理器。
Ab Series Machines are medium duty fillers that are often used in laboratories as automatic pipettors.
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