This SIS mixer receiver is reliable, and can achieve good noise performance even operated at 4.3k temperature with a close cycle helium refrigerator.

这种SIS混频接收机性能可靠，且可用闭合循环氦制冷机冷却，在4.3 K温度操作即可达到好的噪声性能。

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The basis for selecting the reasonable temperature difference at the hot end of the first main heat exchanger of close-cycle 4.4K refrigerator is provided.

将其测试结果与模拟试验结果进行了比较，为闭式循环4.4K制冷机的第一级主换热器的热端温差的合理选取提供了依据。

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In this paper, a close-cycle shaker control method, which is realized by using a two-channel FFT analyzer and a PC, is studied.

本文研究了一种利用双通道FFT分析仪和PC机实现激振器闭环控制的方法。

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We're going to close the cycle with another adiabatic step.

换一个,绝热过程。

麻省理工公开课 - 热力学与动力学课程节选

"He is carrying out, let's say, assimilating as he would say, in the spirit of battle, but they're complex treatments... that should at some point begin to close the cycle of treatment of his illness, " Maduro said.

NPR: VP: Chavez Getting 'Complex And Tough' Treatments

"This would really close the fuel cycle for us, " says Tammy Orr, the chief executive of the joint venture.

FORBES: Energy & Genius

Since we are close to the 2014 election cycle, more muddle-through is likely.

FORBES: Brazil's Strengthening Currency Poses Competition Problem