rigid point of support 刚性支点
Four-point rigid hitch 四点刚性挂接装置
rigid tine with renewable point 可换尖的刚性锄齿
rigid body fixed-point rotation 刚体定点转动
rigid three-point pressure knee orthosis 三点加压式膝反屈矫形器
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But I would think that a decent starting point would be a rather more rigid application of the law as it currently stands.
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