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1.The belt guide pulley is a crucial component of the transmission system.
皮带导向轮是传动系统的关键部件。
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2. The belt guide pulley was designed to improve the efficiency of the machine.
皮带导向轮的设计目的是为了提高机器的效率。
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3.The belt guide pulley was replaced with a new one after several years of use.
经过几年的使用后，皮带导向轮被更换了新的。