Vacuum pump is a relatively sophisticated equipment, it's working medium is a special high boiling point, low-volatile oil pump, its effectiveness depends on the mechanical pump and pump oil quality.
真空油泵是一种比较精密的设备，它的工作介质是特制的高沸点、低挥发的泵油，它的效能取决于油泵的机械结构和泵油的质量。
In order to open this puzzle, boiling point of the network television special invited her friends to bring you the story behind the unknown.
为了揭开这个谜题，沸点网络电视特别邀请了邓丽君的好友为您带来背后不为人知的故事。
The normal boiling point of a liquid is the special case at which the vapor pressure of the liquid equals the ambient atmospheric pressure.
常压沸点是一个特例，其中，液体的蒸汽压与环境大气压相等。
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