A kind of cryogenic orifice plate flowmeter by vacuum insulation is used in the cryogenic LN2 system for 4M-2000A superconductor cable.

一种真空保温孔板式低温流量计用于4米高温超导电缆制冷系统。

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But conventional methods are unuseful as the tiny displacement is hard to detect under cryogenic environment where superconductor works.

由于超导体需运行在极低温环境，运用常规方法难以对超导体的微小位移进行测量。

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But conventional methods are unuseful as the tiny displacement is hard to detect under cryogenic environment where superconductor works.

由于超导体需运行在极低温环境，运用常规方法难以对超导体的微小位移进行测量。

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