bend strength and contact fatigue strength  弯曲强度和接触疲劳强度

Gear Tooth Contact  齿轮轮齿接触

Gear Tooth Contact Pattern  齿轮轮齿接触印痕

pinion and bevel gear tooth contact  大小锥齿轮齿啮合

pinion and bevel gear tooth contact check  大小锥齿轮齿啮合情况检验

pinion gear tooth contact  小齿轮轮齿啮合

ring gear tooth contact  齿圈牙齿接触

tooth face contact fatigue strength  齿面接触疲劳强度

tooth face contact stress  齿面接触应力

accounting and contact system  核算包干制

bio-contact and oxidation method  生物接触氧化法

Change and contact  变化与联系

circular tooth contact  齿面接触区

compression displacement and contact force  压缩位移与接触力

contact and crash  接触和碰撞

contact and friction  接触摩擦; 接触与摩擦; 接触及摩擦

Contact and impact  接触和碰撞

contact between layers  层间接触

contact between pile and soil  桩土接触