管内部 meaning in English

intracanalicular part

The interior of the tube must be kept a hard vacuum to preserve the photo cathode .
显象管内部一定要保证高真空才能保护光电阴极。
Three - dimensional numerical simulation on inner flow in undulated pipes
波浪管内部流动的三维数值模拟
Experimental investigation on flow and heat transfer in rough microtube
微粗糙管内部流动与对流换热的实验研究
Guide to weld discoloration levels on inside of austenitic stainless steel tube
奥氏体不锈钢管内部焊接褪色度指南
An experimental study on the flow characteristics for oil - water emulsions
定热流加热下微管内部换热特征的实验研究

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