By analysing actual scene to hoist, this paper introduces automatic oil ejector. It can decrease wear and tear, raise using life of steel rope.
通过对提升机现场实际分析，制作了自动注油器，减小了钢丝绳的磨损，提高了钢丝绳的使用寿命。
2
A sampling project for the water quality automatic monitoring system was introduced in this paper, self-absorption-ejector pump was used in the system instead of centrifugal pump.
介绍一个以自吸喷射泵为取样泵的水质自动监测系统取样工程建设方案及其日常维护措施。
3
The structure, operating principle and action of mechanism of automatic sprue cutting by ejector pin in thermosetting plastics injection mould was described.