Combining with the nature of the storage and fragility of rice, by using the optimizing design method, working out the best vacancy of vacuumizing for rice.4.
3、结合大米真空包装的贮藏品质及脆值,通过优化设计来研究大米真空包装最佳真空度。
参考来源 - 结合流通环境对大米真空包装技术的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This paper introduces a kind of vacuumizing system for X-ray machine head.
介绍一种X线机机头真空处理系统。
The utility model discloses a steam-extracting cooling system for improving the vacuumizing effect of a condenser.
本实用新型公开了一种提高凝汽器抽真空效果的抽汽冷却系统。
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.
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。
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