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.
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.
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