洞角

本研究结果丰富了洞角反刍科草食动物重要功能基因遗传资源的研究。

The results of this study largely enriched the genetic resources research about important functional genes in herbivore of hollow horn ruminant families .

结果采用70°洞缘角离体牙的抗折力要优于采用90°、45°和弧形洞缘设计离体牙的抗折力。

Results Anti fracture forces with the cavity margin angles of 70 ° was better than those of 90 °, 45 ° and arc .

结论为改善复合树脂充填牙齿的修复质量，应该将洞缘角设计成70°左右的短斜面。

Conclusion To improve the repair quality of teeth filled with combined resin , cavity margin angles should be designed as short slant with an angle of 70 ° or so .

目的用力学方法，对离体牙不同洞缘角进行抗折力的实验研究，探讨洞缘抗力的最佳设计。

Objective With the means of dynamics , to make an experimental study of anti fracture forces on the different cavity margin angles of dissociation tooth and search the best design of cavity margin anti fracture forces .

算例结果表明，影响隧道横向贯通精度的主要因素是两端洞口进洞基线方位角测量的相对精度。

The research result shows that the key factor to affect the lateral piercing accuracy for a tunnel is the relative accuracy of baseline azimuth surveying at the two entrances of the tunnel .