gear contact的用法和样例：
例句
- A method using demodulated resonance technique based on blind source separation is developed for gear contact diagnosis.
摘要提出一种运用基于盲源分离的共振解调技术对齿轮齿面接触故障进行诊断的方法。 - The line of contact is longer and the contact ratio is bigger, the meshing stationarity is good.
渐开线弧齿圆柱齿轮具有较长的齿面接触线和较大的啮合重合度，齿轮副啮合平稳性好。
