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US4586343A Process and device for metering small amounts of a low boiling liquified gas 失效
用于计量少量低沸点液化气体的方法和装置

Process and device for metering small amounts of a low boiling liquified
gas
摘要:
The invention concerns a process and device for metering small amounts of a low boiling liquified gas which flows from an orifice of a cold-insulated vessel. In this process and device the orifice of the vessel is sealed off by a gas bubble.
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