circular forming shoulder 圆形料管翻领成型器
circular shoulder
圆形的肩膀
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If the semi-circular component has greater deadweight, the height of the counter shoulder protector can be reduced.
如果增加构件自重，则可以进一步减小反压护肩的高度，提高稳定性；
youdao
Aside from your basic PlayStation buttons (sans joysticks), two shoulder buttons and a duo triggers, the unit features a duo of paddles that wrap along its circular center which can be be used for shifting and the like.
ENGADGET: Sony PlayStation Move Racing Wheel hands-on (video)
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