词汇	crust breakers
释义	crust breakers 打壳机
随便看	derivative call derivative capp system derivative cell derivative characteristic derivative chord derivative chromatography derivative chromosome derivative chromosomeder derivative chronopotentiometry derivative circuIation derivative circulation derivative citizenship derivative coefficient derivative compensation derivative component derivative concept and its introduction derivative control derivative con-trol derivative control action derivative control coefficient derivative control error derivative control factor derivative control imput derivative control input derivative controller