cryogenically cooled parametric amplifier是什么意思

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The principle of magnetic refrigeration, proof-principle demonstration apparatus and its development are introduced.

介绍了室温磁致冷机的原理，对世界上最新发展的磁致冷原理样机和具有实用价值的磁致冷材料进行了介绍。

Thermodynamic properties of magnetic refrigeration substance under external magnetic field, especially of ferromagnetic materials for magnetic refrigeration at room temperature are reviewed in this paper.

本文对近年来在制冷界研究相当活跃的磁致冷工质 ,尤其是室温磁致冷工质———铁磁材料 ,在外加磁场中的热力学特性进行了分析、讨论 ,并在此基础上总结了选取室温磁致冷工质的理论依据和原则。

The basic concepts of the magnetocaloric effect and the working principle of magnetic refrigeration are been introduced.

阐述了磁热效应的基本概念及磁致冷的原理,介绍了磁工质的选择依据,概述了磁致冷材料,特别是室温磁致冷材料的研究进展。

Corresponding constants in the equation are determined for eleven kinds of widely used refrigerants.

阐述了ＣＳＤ状态方程的应用，为十一种常用致冷剂确定了方程中相应的计算常数，并以其中两种为例，对其热力性质进行了详细计算。

Pure compound parameters of the prsv eos for refrigerants;

致冷剂的PRSV状态方程纯物质参数

Mach-Zehnder interferometry for detecting side cooling uniformity of laser medium;

检测激光晶体侧面致冷均匀性的马赫-泽德干涉法