This company mainly produces various series of drilling screw with tapping screw dry wall screw fiber board screw self - tapping screw machine screw all kinds of non-standard goods.
公司主要生产各系列的自钻自攻螺钉、干壁钉、纤维板钉、自攻螺钉、机螺钉及各种非标准产品。
Nonetheless, this mechanical study provides potentially useful information regarding the performance of the various posterior rod-and-screw constructs.
尽管如此，本研究还是可以提供一些关于不同后路顶棒装置性能的有价值的信息。
The limitation diagram of key structural elements in design of screw-press for various materials and sizes is given through the data investigation of die forging on screw press.
本文通过对作者所在单位的螺旋压力机上模锻件的数据调查，给出了设计所需的各种材料和尺寸的结构要素极限图表。
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