1·By using the empirical formulae of the ship resistance, the sailing resistance computation of the ship team for Three Gorges Project open channel navigation has been conducted.
本文应用船舶阻力经验公式，对三峡工程明渠施工通航船队，进行了航行阻力计算分析，并建立了水流阻力与航速；
2·The calculation formulas of the resistance coefficient in open channel flows were summarized according to different flow patterns and flow regions.
按不同流态及流区对明渠水流阻力系数的计算公式进行了归纳和总结。
3·A land drain is usually a pipe buried in farm land but it may also be an open channel.
农田的排水系统通常是埋在农田中的管子，但也可以是明渠。
4·Aiming at the problem of inaccurate water measurement in irrigation, we design a new open channel flowmeter.
针对灌区用水计量模糊问题，开发了一种新型明渠流量仪。
5·The analysis method of flow field not only can show the discharge in open channel, but also the velocity distribution of its transverse profile.
流场分析法不仅可给出明渠的流量，还可给出明渠横断面上的流速分布。