Trapl特拉普尔trapn.圈套；陷阱；困境；双轮轻便马车；U（或S）型管道；防臭瓣v.设圈套；陷入（困境）trapezoidal shaping梯形成形trapeziform section梯形断面trapezoidal divisor梯形分割绘制法trapped hole centre俘获空穴中心trapezoidal profile梯形侧断面Trapped temperature捕获温度Trapezoid mechanism梯形机构Trapped propagation陷获传播trapdoor subsidence天窗式塌陷trap type technlque陷阱式技术