The valve lifter, a round cylinder, rides on the cam. The grinding wheel sent a shower of sparks across the workbench.
气门挺杆为一圆筒体,坐落在凸轮上。砂轮迸出的火花直落到工作台另一端。
the cam has a high point, or lobe; every time the cam rotates, the lobe comes around under the valve lifter and move it upward.
凸轮有一个最高点,即凸角,每一次,凸轮旋转,凸角旋转到挺杆的下部,使其向上移动。
The valve lifter, a round cylinder, rides on the cam.
气门挺杆为一圆筒体, 坐落在凸轮上.
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