The effect of using donor cells of different cell cycle, cell type, chemical activation, as well as refrigeration, on cloning animal has been summarized.
供体细胞的细胞周期、细胞类型、冷冻处理和化学激活等方面都可能影响动物克隆的效率。
According to the principle of overcooled refrigeration cycle, a new type residential ice storage air - conditioning system was designed and its operating process was introduced.
基于大过冷度制冷循环的原理，提出了一种新颖的家用冰蓄冷中央空调系统，并对此系统的工作过程进行了详细介绍和分析。
HD series water-cooled type cold and dry machine is the use of water as a carrier for cooling refrigerant, thus completing the entire refrigeration cycle.
天源系列水冷型冷干机是利用水作为载体来冷却制冷压缩机的冷媒，从而完成整个制冷循环。
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