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studded roller feed drill 外槽轮排种器条播机
There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.
旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。
The design calculation process and related process methods for transmission ratio, gear transmission, end mechanic sealing and eccentric short roller bearing used for 180 turbine drill are described.
叙述了180涡轮钻具用减速器的传动比，齿轮传动，端面机械密封和偏心短圆柱轴承的设计计算过程和有关处理办法。
We provide services for printer supplies accessories industry, metal drill bit industry, textile industry, plastic roller rubber industry, machinery industry and so on.
我们为打印机配件耗材行业、五金钻头行业、纺织行业、橡塑胶辊行业、机械行业等行业提供服务。
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