求翻译：制冷系统选用1台250kw JZ2LG20Z全自动液氨冷却螺杆制冷压缩机组分别作为糖化冰水系统、发酵液倒罐系统和酒精水系统的备用机组。是什么意思？

Refrigeration system used in Taiwan 250kw jz2lg20z automatic liquid ammonia cooling screw refrigeration compressor as glycated chilled water system, the standby unit of the fermentation broth down the tank system and alcohol water system.

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The refrigeration system selects 1 250kw the JZ2LG20Z completely automatic liquid ammonia cooling screw rod refrigeration compression unit to take the saccharification ice water system, the fermentation fluid tank switching system and the ethyl alcohol aqueous system spare unit separately.

Selection of refrigeration system 1 sets JZ2LG20Z automatic liquid respectively as the saccharification of screw refrigeration ammonia cooling compressor ice water system, water and alcohol fermentation tank system stand-by units of the system.

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