1) terrance section
梯田断面
2) trapezoid section
梯形断面
1.
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。
3) Trapezium-side method
梯形断面法
4) water surface profiles of trapezoid
梯形断面水面线
5) terraced field
梯田
1.
The effect of auxiliary irrigation on yield of maize in terraced field;
梯田地集流补灌措施对玉米产量的影响
2.
We take the sector of Helong,Jinghe River,northern Luohe River and the Weihe drainage area as an example,and analyze the effect of preventing and controlling of soil erosion by afforestation,planting of grass,the terraced field and dam of silt.
在总结黄河中游水土流失的影响因素和水土流失危害的基础上,以河龙区间、泾河、北洛河、渭河流域为例,分析了造林、种草、梯田和淤地坝防治水土流失的效果,结果表明在不同的区间应针对其水土流失的特点,采用不同的水土保持措施。
6) terraced land
梯田
1.
Plastic film covering is the key measure for high yield of corn in terraced land in north Shaanxi;
地膜玉米是陕北梯田粮食高产的关键措施
2.
In ad- dition,terraced land is more resistant to soil erosion during intense storm and sediment from terraced land is lower than that from slope land.
梯田是坡地水土保持工程的重要措施,通过扩大梯田面积,加大农田投入,在有限的土地上提高粮食单产,是粮食生产潜力开发的主攻方向。
3.
The area of terraced land is made up of 91.
甘肃省庄浪县梯田面积已占坡耕地面积的 91 74%、占综合治理面积的 41%。
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条