前端轮系从手动张紧的三角带传动改为自动张紧的多楔带传动，运转更平稳，可靠性高。
Front-wheel system was changed from the manual tension V-belt to automatic tension V-ribbed belts , more smoother operation and higher reliability.
提出了应力是产生腐蚀前端三角形的主要原因的推测，并通过退火实验验证了这一推测。
Then the profile of etching front is studied and the forming factors of the triangle at etching front are analyzed. The results show that the major factor of the triangle formation is stress.
作品前端塑造了一个肌肉结实的男性蹲像，后部就是一个巨型的三角形，高高的指向前方。
The sculpture depicts a muscular male crouching down tightly against the ground. The triangular piece pins the body down to the ground with one tip while the other tip points up towards the front.
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