hermetic compressor短语¹⁴⁴⁹⁷²⁺² 基本例句 封闭式压缩机 Based on the thermodynamic and structural characteristic of the hermetic/span> compressor, this paper describes a theoretical method of evaluating thermodynamic performance of the hermetic compressor. 本文针对全封闭活塞式制冷压缩机的热力、结构特点，从理论上探讨热力计算方法。 cnki