equal-arm bridge 等臂电桥
equal arm balance [仪] 等臂天平
Equal Arm 平等武装
equal arm bridge 等臂电桥
equal-arm balance 一种简单天平 ; 等臂天平
Upper arm is about equal in length to the shoulder blade in order to allow for good extension.
上臂长度约等于肩胛骨，以便为良好的扩展性。
Upper arm and scapula are approximately equal in length and form an angle of 90 degrees.
上臂骨与肩胛骨长度基本一致，并呈90度角。
Length of shoulder blade and upper arm are equal. Height from elbow to Withers approximately equals height from ground to elbow.
肩胛骨与上臂长度相等，从肘部到马肩隆与从地面到肘部的长度相等。
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