预冷室和仓库直到实验室被占用后8个月才完成。
The precooling room and warehouses were not completed until about 8 months after the laboratory was occupied.
因为预热和效果预冷室收费增加了柜台前，贸发局的压力，这是机械。
Because preheat and precool increases the chamber charging pressure before the TDC, which is mechanically counter-productive.
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