The chilled DSD system was a relatively small distribution method, created for items which required continuous refrigeration.
冷冻的DSD系统是一个相对小的分拨方案，为需连续的冷却项目产生而来。
The chilled DSD system was a relatively small distribution method, created for items which required continuous refrigeration.
冷冻的DSD系统是一个相对小的分拨方案，为需连续的冷却项目产生而来。
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