variable element的相关资料：
临近单词
variable rule
variable
variable length four binary-three ternary
Variable pitch cylindrically helical spring
variable pressure difference control method
variable coefficient KdV-Burgers equation
variable-revibrating-beam accelerometer
variable-air-gap capacitance transducer
variable-resistance helium thermal bridge
variable-frequency speed control technique
variable pulsed ultrasonic therapy apparatus
variable refrigerant flow air-conditioning
