In most bicep exercises, you either do both arms at the same time, or the non-working arm is resting while the working arm is in motion. 從你的手肘部位開(kāi)始，兩手握著(zhù)啞鈴，曲臂使啞鈴處于向上的方向以做一個(gè)標準的肱二頭肌訓練。
A pedal is pivotally secured to the pivot link and includes an arm. 踏板可轉動(dòng)地固定于轉動(dòng)連桿上，并包括一個(gè)臂。
A study of the dynamic stability of an eccentric slider crank mechanism with elastic effects at both joints of the coupler is presented. 討論了連桿接頭處具有彈性效應的偏心曲柄滑塊機構的動(dòng)態(tài)穩定性。
