针对上述一般机械加工中常见的问题，本文介绍了某叉形零件和转向管接头车削专用夹具的设计和适用于大、中型孔的两种加工方法。
For these common problems in mechanical machining, special fixtures for two special parts, a forked part and a steering joint, were designed and accordingly two proper processes were introduced.
其精良的产品可广泛应用于机械加工中的钻孔、扩孔、铰孔、锪平面及攻螺纹等。
Its sophisticated products can be widely used in machining of drilling, reaming, reaming, Tapping countersink flat and so on.
多种因素如PVC、纤维素纤维的改性处理、加工条件等都将影响泡孔形态与制品的物理机械性能。
Many factors such as the surface modification of PVC matrix and cellulose-fiber, processing conditions all affected the cell morphology and physical properties.
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