rack and pinion drive ==> 齿条-小齿轮传动 rack and pinion gate lifting device ==> 齿条齿轮式启门机 .
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rack-and-pinion drive 齿条齿轮传动
canned rack and pinion drive 全密封齿轮齿条传动机构
pinion and rack drive 齿轮齿条传动
Resonable Designs: advanced rack and pinion drive in Y axis with larger speed and strength.
设计合理：采用先进的Y轴双齿条传动、速度快、力量大。
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