J - t loop is precooled by two - stage pulse tube cryocooler in order to obtain liquid helium temperature.
系统设计用两级脉冲管制冷机预冷小型节流制冷机以获得液氦温区环境。
A calculation followed all operating conditions is made to air-precooled heat exchangers, parameters of which are selected.
对选定参数的空气预冷换热器作了全工况跟踪计算。
In those cycles in which the shelves are precooled prior to loading, there is concern for any ice formation on shelves prior to loading.
在预先冷冻的循环过程中，在板层表面在产品摆放之前会结冰。
In this paper, two kinds of structural types of air-precooled heat exchangers, plate-fin and tube bundle, chosen and used for composite engines are suggested.
提出组合发动机空气预冷换热器可供选用的板翅式和管束式两种结构型式。对选定参数的空气预冷换热器作了全工况跟踪计算。
In this paper, two kinds of structural types of air-precooled heat exchangers, plate-fin and tube bundle, chosen and used for composite engines are suggested.
提出组合发动机空气预冷换热器可供选用的板翅式和管束式两种结构型式。对选定参数的空气预冷换热器作了全工况跟踪计算。
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