backward movement

短语词组

短語

• Prevention backward movement infection 防止逆行感染
• Prohibited backward movement 禁止逆行
• backward movement of poppet 頂杆後坐
• forward and backward movement 正反曏運行
• backward and return movement 前後運動
• forward and backward movement knob 載物台前後運動螺鏇
• backward movement of the truck 卡車的倒車
返回 backward movement