... 低温退火 low temperature annealing 下吸入阀 low suction valve 低压蒸汽 low pressure steam ...
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在吸入和排出阀的交替作用下﹐实现压送与循环冲洗液的目的。
In the alternating suction and discharge valve under the influence of pressure delivery and recycling to achieve the purpose of washing fluid.
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