单词	水质指标
释义	水质指标 water quality index
随便看	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 derivative controller action derivative controller, D controller derivative controlor lead network derivative control ouput derivative control output derivative conveyance