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根据实际要求和目前的注油方法及装置的情况，提出了真空循环注油的思想，设计并研制成功了这种注油装置；介绍了它的工作过程原理、特点及应用情况．
According to the actual requirements and the current oiling methods and devices, the idea of vacuum circulating oiling was put forward. The oiling device was designed and developed successfully. The working principle, characteristics and application of the oiling device were introduced.