valve timing是什么意思 valve timing怎么读
valve timing的用法和样例
- This new type cam structure can implement continuous Variable Valve Timing and continuous Variable-Lift simultaneity, which adapt to the developing tendency of VVT.
这种新型凸轮结构可以实现连续可变气门正时和气门升程，适应了无级式机电一体化可变气门正时和可变气门升程机构的发展趋势。
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