to and fro motion

基本解釋

Coupled vibrations of the jigging motion with the to-and-fro motion are frequently encountered in the run of four wheel drive vehicles such as loaders. At the same time.
裝載機等四輪驅動車輛行駛時，容易出現俯仰與前后水平方向耦合振動。
A new training apparatus for legs based on crank and rocker mechanism, is proposed in this paper. It can simulate the to-and-fro motion of the sporter's legs realistically.
介紹了一種最新研制的訓練腿部力量的健身器械，該健身器械采用了曲柄搖桿機構，能真實地模擬運動員雙腿交替運動。
This impulsion tool uses a high speed on-off valve to control to-and-fro motion of the distributing oil valve core, which impels the cylinder rod to-and-fro motion to form impulsion.
本文在對國內外現有的機械臂液壓驅動系統(tǒng)設計理論和控制方式進行了綜合分析后，研究了基于高速開關閥先導控制的新型機械臂液壓驅動系統(tǒng)。