The character signals of an internal combustion engine in operation were extracted by choosing appropriate sensor, improving the mounting method for the sensor and selecting test point reasonably.
主要叙述在内燃机不停机的情况下，通过选择恰当的传感器，改进传感器的安装方法和合理选择测点来提取机器特征信号。
The elastic and plastic problem of thin-walled curved box girders is solved with the spline finite point method and the section internal force plastics coefficient method.
采用样条有限点法和截面内力塑性系数法对薄壁曲线箱梁的弹塑性问题进行了求解。
The equabions on tooth shape of internal gear by means of envelope method is derived and the pressure angle, inflection point, curvature, topcut are analysised in detail.
用包络法导出了内齿轮的齿形方程，对压力角、曲率、拐点、顶切进行了详细分析，并给出了计算公式。
应用推荐