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1·The points for attention in designing the serration axle are pointed out.

指出了渐开线螺旋花键轴几何尺寸设计时应注意的问题。

2·The new method for designing Fresnel lens has a wide serration breadth and unequal pitch.

用这一方法设计的菲涅耳透镜，齿宽较大，齿距不等。

3·The full text used the methods of combining literature and the literature, and make serration research as a whole for li zhi.

全文使用文学与文献结合的研究方法，对李廌作整体的研究观照。

4·The results show that high stress in serration and its arc transition region, and observed that severe stress concentration in these locations.

结果表明叶片高应力区域位于榫齿及其圆弧过渡处，并且发现在这些位置存在严重的应力集中情况。

5·Using the wrong combination will result in a bad connection between crankset and bottom bracket and may lead to a damaged serration of your crankset.

如果硬要这样配合使用，牙盘和中轴之间结合的会很糟糕，可能会导致牙盘的花键损坏。

6·The optimization rule on the layout and serration of the compact range was referred to, then the optimization algorithm was performed and the result was given.

同时对紧缩场布局设计及边齿参数作了优化设计，提出优化准则，并给出设计结果；

7·As the rise of the strain rate, the feature of the true stress - true strain curve changed from flat to serration, and the thermal deformation softening feature was reinforced.

随应变速率升高，真应力-真应变曲线特征从“平缓”型向“锯齿”型转变，材料热变形软化特征增强。

8·It is difficult to grind bore on gear and secure its precision. Especially more linkage gear's precision can not be secured easily, so it maybe become a waste product because of serration error.

磨削加工多联齿轮内孔在工艺上有一定难度，磨孔后易使齿面误差超差造成废品。