facial contact的用法和樣例：
例句
- The line of contact is longer and the contact ratio is bigger, the meshing stationarity is good.
漸開(kāi)線(xiàn)弧齒圓柱齒輪具有較長(cháng)的齒面接觸線(xiàn)和較大的嚙合重合度，齒輪副嚙合平穩性好。 - A method using demodulated resonance technique based on blind source separation is developed for gear contact diagnosis.
摘要提出一種運用基于盲源分離的共振解調技術(shù)對齒輪齒面接觸故障進(jìn)行診斷的方法。
