词组、短语、俚语及习惯用语• trapezoidal bent
梯形排架。• trapezoidal deflection
梯形偏转。• trapezoidal excavator
梯形挖掘机。• trapezoidal generator
梯形波[脉冲]发生器。• trapezoidal integration
梯形积分法。• trapezoidal modulation
梯形调制。• trapezoidal pass
梯形孔型。• trapezoidal pattern
(表示调制百分比的示波器)梯形图。• trapezoidal share
梯形犁铧。• trapezoidal steel wire
梯形钢丝。• trapezoidal thread
梯形螺纹。• trapezoidal tooth clutch
梯齿轮离合器。