在飞轮的外缘(压)有一齿环，在发动起动时，齿与起动机的驱动小齿轮啮合。
The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during engine cranking.
设计的新型三环减速器主要由圆弧齿同步齿形带、小带轮、大带轮、曲柄轴、传动环板、输出轴、外齿轮和箱体等组成。
Newly developed three ring gear reducer is comprised of synchronous belt, big and small pulleys, crankshaft, drive ring plate, output shaft, external gear and case.
在螺旋锥齿轮硬齿面精加工这一环节上，我国与发达国家的差距尤为明显。
There is an obvious disparity between our nation and other developed nations in the field of hard surface finish machining of the spiral bevel gear.
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