目的确定在股骨假体柄尾端位于股骨螺钉孔水平时对股骨干扭转力学特性的影响。

Objective to determine the effect of cemented intramedullary stem tip on bone torsional property at the level of femoral cortical screw holes.

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单个标准模块主要由中间通孔式连接手臂、履带驱动链传动装置、模块偏转锥齿轮传动装置、模块俯仰链传动装置、连接柄等组成。

A standard such module is mainly composed of the link arm, the link handle, the track driven system, the offset pitch joint, the offset yaw joint and so on.

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本公司主要生产直柄麻花钻头，硬质合金多用直柄麻花钻，金属开孔器，钨合金锯片以及建工钻的专业生产厂家。

This company produces straight-handle twist drill, hard metal multi-aid straight-handle twist drill, metal hole digger , tungsten alloy saw blade, and building drill.

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