本实用新型属于齿科用烤瓷炉的抽真空装置。
The utility model belongs to an evacuating device of a porcelain furnace in the odontology.
其优点是排空容积小、抽真空快、装置简单轻便、重量轻、体积小。
It has such advantages as small empty volume, high vacuumizing speed, simple and convenient structure, etc.
一种空调装置的清洗方法等，在使用二氧化碳作为工作制冷剂时，不用进行抽真空，就能降低残留的杂质的量。
Provided is a method for cleaning an air conditioner, by which a quantity of remaining impurities is reduced without vacuumizing, in the case of using carbon dioxide as an operating coolant.
采用一套装置，将电池壳体抽真空，然后打钢珠，抽真空时比较短，效率高。
Use a device, the battery, then play a vacuum in shell steel vacuum pumping, are short, high efficiency.
采用一套装置，将电池壳体抽真空，然后打钢珠，抽真空时比较短，效率高。
Use a device, the battery, then play a vacuum in shell steel vacuum pumping, are short, high efficiency.
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