介绍了一种摩托车发动机最佳点火角试验仪的设计原理、电路结构和程序流程。
The design principle and circuit construction and program process of apparatus of the best ignition angle for motorcycle engine are introduced.
推式铰接装置是可以应用于发动机后置铰接式客车的专用铰接装置，其具有独特的结构、工作原理及电气控制系统。
The push articulating device is special for the rear engine articulated bus. It possesses particular structure, working principle and electric control system.
提出一种可变配气相位机构，并介绍它的结构、工作原理以及为发动机和整车带来的实际效果。
A variable valve timing mechanism has been developed. Its structure, operating principle and practical effects on the engine and vehicle performances are also presented.
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