effective at在 ... 效率高
effectiveadj.有效的;生效的;实际的
Effective analysis效应分析
effective-stroken.有效冲程
effective titanium有效钛
effective training有效培训
effective language现行语言
effective cohesion有效内聚力
effective thinking有效思考
effective fragment有效破片
effective medicine良药
effective constant有效常数