“trapezoidal pattern”簡單造句，trapezoidal pattern造句子

This paper deals mainly with the operationof a trapezoidal controller and the exposure procedure of a trapezoidal pattern, by the way the exposure of a rectangular pattern is described first.

Daoling is a typical mountain village. Folk houses are arranged in a fan-shaped trapezoidal pattern around the water mouth, surrounded by thousands of ancient trees and ten thousand mu terraced fields. Flowers and seas in four seasons display a stunning "earth art".

Exposure of a trapezoidal pattern is obtainedby resolving it into a series of element rectangles, and then exposuring them inorder so as to make up a trapezoid.