Valvetiming is a major factor in achieving good volumetric efficiency.
定时阀是实现高容积效率的一个主要因素。
2
For most regenerative dryer is concerned, the most complex components that valve and timing circuits.
对大多数再生式干燥器而言,最复杂的部件就是阀和计时电路。
3
The 4-cylinder is a 16-valve DOHC design with Toyota’s VVT-i variable cam timing system, and is rated at 179 horsepower at 6000 rpm and 172 lb-ft of torque at 4000 rpm.