rough section

The traditional methods for computing critical water depth of open channel with trapezoid section ( h k) are trial and error method, graphic method, approximate solution method and iteration method, whose shortcomings are rough precision, large computation amount and complex resolving problem.

目前计算梯形断面明渠临界水深hk的常用方法有试算法、图解法、近似公式法和迭代法，它们存在计算精度不高、求解复杂等缺点。

To solve the above problems, section 4.2 in this chapter defines and investigates the notion of rough convergence for sequences on discretized axis of reals.

针对以上问题，本章第二节定义并讨论实轴离散化后，粗柯西数列的收敛性。

The French docudrama starring a cast of non-professional actors features the rough and tumble of school life in a tough multi-cultural section of Paris.

该法国影片主要是一些非专业演员演绎在多种文化交织的巴黎艰苦的校园生活。

Light Scattering From a Spherical Particle Above a Slightly Rough Surface and the Calculation of the Scattering Cross Section

微粗糙面上方球形粒子的光散射及其散射截面的计算

Inner-city children from neighboring East New York, a rough section of Brooklyn where real gunslingers still roam, come to the stables to learn to ride.

附近东纽约（混乱的布鲁克林区的一部分，那里现在还有满大街的持枪匪徒）的孩子来到“马厩”学习骑术。