单词	lever weigth
释义	lever weigth 踏桿重锤
随便看	existence-proposition existence question existence rate existence reference existence restriction existence result Existence Results for a Class of Beam Equation existence rules existence specification existence state existence strategy existence study of internal relationship existence subject matter existence symbol existence test EXISTENCE TEST FOR NCP SOLUTIONS existence theorem existence theorem for roots existence theorem of implicit function existence theorem of root Existence Theorems existence theory existence time existence tragedy existences