按照模糊方法，以梯形形式建立隶属函数。
The trapezoid membership function is constructed by fuzzy method.
梯形渠道的水力最优断面因为具有在过水断面面积一定时通过的流量最大的特点，是水利工程中一种常见的渠槽形式，它的断面设计需求解一个很复杂的高次方程。
Trapezoid channel is a common form in hydrological project with characteristic of maximum influx at a certain time, its section designing requires a complex equation of higher degree.
凭借其宁静梯形形状的建筑特色和周围多形式和多色彩的建筑形成相互辉映。
With its tranquil, trapeze-shaped form the office building responds to the neighbourhood's diversity of colours and building shapes;
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