To realize artesian discharge, there must be a certain height of liquid level, or an adequate level difference between the liquid stored and the outlet of unloadingarm.
要实现自流付油，油品就必须有一定的液面高度，也就是要求储存油品液面与发油鹤管出口具有足够的高度差。
2
The moving theory of four bar linkage is often used to analyze the triangular armunloading mechanism of dump truck.
重型自卸汽车设计中经常选用三角臂组合式倾卸机构，应用的是铰链四连杆机械运动工作原理。
3
In this article, the analysis on the causes and influence factors of vapor lock of railway swing arm for unloading oil are carried out, and a computational practical example is given.