词汇	painful arc
释义	painful arc 疼痛弧
随便看	ordinary cutting tool ordinary cycloid ordinary cyclotron ordinary damages ordinary davit ordinary-demand function ordinary dense concrete ordinary density ordinary department ordinary deposit ordinary depreciation Ordinary depreciation on the transaction ordinary depriciation ordinary derivative ordinary derivative of a set function ordinary derrick ordinary destruction ordinary dichotomies ordinary dichotomy ordinary diet ordinary diet session ordinary difference differential equation ordinary difference-differential equation ordinary difference equation ordinary differental equations