The shape and size distribution of ice crystals in the frozen wet gluten were studied indirectly by microscopy and mercury porosimeter.

用扫描电镜和压汞仪间接观察和分析了冷冻的湿白中冰晶的形状和粒度分布。

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.

用蒸汽喷射冷设备作为空气调节系统的冷源,不论在用及经常运转用方均较氨冷冻机来得经济,因此近年来它已渐为有关工业部门所重视。