On the basis of the noise linearity of low noise amplifier(LNA), the variable load temperature method is introduced to measure noise properties of cryogenic LNAs.
在低噪声放大器噪声线性的基础上，介绍了负载温度可变法，用于测量低温低噪声放大器的噪声。
A lowest no-load temperature of 13.8 K has been obtained for the first stage without thermal connector, which is a new record for the single-stage pulse tube cooler.
在没有热桥连接的情况下，单独测试第一级最低制冷温度达到13.8K，这是单级脉管制冷机获得的最低制冷温度新纪录。
The maximum forces due to combinations which include the prestressed equivalent load, gravity load, temperature action, earthquake action etc are applied to ring beams design.
环梁设计采用了预应力等效荷载和重力、风、温度、地震多种荷载组合下的最不利内力。
The maximum forces due to combinations which include the prestressed equivalent load, gravity load, temperature action, earthquake action etc are applied to ring beams design.
环梁设计采用了预应力等效荷载和重力、风、温度、地震多种荷载组合下的最不利内力。
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