Retention gear pump, motor and foot screws, screw the force should be uniform, reliable connection.
紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。
Objective: to study on retention force of dentures with various amount and distribution of attachments, provided reference to clinic use.
目的：对不同数量及分布的钉帽附着体固位力进行测试，为临床应用提供参考依据。
Retention force of 10 teeth are measured by using biomechanical method.
通过生物力学的方法测定10颗离体牙充填物的抗拉力强度。
In the same subjects and different force direction, the retention forces of 3 successive measurements were significantly different (P<0.05).
相同受试者，不同施力角度，测量结果差异具有显著性（P<0.05）。
So the author gives several suggestions to expects to contribute little force for our country. This part also discusses the relationship among Title Retention, pledge on movables and hypothec right.
对此笔者提出几点改进建议，并就司法实践中所有权保留与抵押、质押等典型性担保物权发生竞合时如何处理进行了有益探讨。
Conclusion: the number, site and dislocation direction of the attachment affect retention force of bar-clip implant overdenture.
结论：种植杆卡式固位体的数量，位置及脱位力方向对种植覆盖全口义齿的固位力都有一定影响。
Conclusion: the number, site and dislocation direction of the attachment affect retention force of bar-clip implant overdenture.
结论：种植杆卡式固位体的数量，位置及脱位力方向对种植覆盖全口义齿的固位力都有一定影响。
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