Comparison was made to the isenthalp approximate method commonly used in engineering with the accuracy method, the feasibility of the en...

对于中常用的密度公式也进行了分析对比。

Operating costs of using the steam jet refrigeration system to cool the temperature of water in air conditioning system are lower than the refrigerative compressor.

用蒸汽喷射制冷设备作的冷源,不论在基建费用及经常运转费用方面均较氨冷冻机来得经济,因此近年来它已渐有关工业部门所重视。