Due to the influences of local topographical factors and terrain inter-shielding, calculation of DSR quantity over rugged terrains is very complex.
基于数字高程模型(DEM)数据和气象站观测资料建立了起伏地形下太阳直接辐射分布式计算模型,模型充分考虑了地形因子(坡向、坡度、地形相互遮蔽)对起伏地形下太阳直接辐射空间分布的影响;以1km×1km分辨率的DEM数据作为地形的综合反映,计算了起伏地形下黄河流域1km×1km分辨率太阳直接辐射的空间分布;深入分析了起伏地形下太阳直接辐射受地理、地形因子影响的变化规律。
Differing greatly from single-phase flow,multiphase flow will exhibit special hydraulic characteristics due to the slip between phases,especially for the pipeline in hilly terrains.
塔里木油田塔中401计量站至塔中四联合站输送管道(塔四联管道)累计起伏高度超过300m,起伏地形造成油气混输非常困难。
An analysis is made to study the factors influencing operational cost of pipeline and compressor station in the long-distance natural gas transmission pipeline over hilly terrain.
通过对起伏地形天然气长输管道系统中影响管道和压缩机站运行费用的各种因素的分析,结合起伏地形的特殊性,以输气管道终值费用最小为目标函数,加以水力、热力、流态等约束条件,建立了起伏地形天然气长输管道优化运行数学模型,并利用惩罚函数法对模型进行求解。
The landscape under oceans differs from that on the earth. It features with fluctuant landforms.
海底地貌与大陆地形不同，它一起伏不平的地形为特征。
rolling acres of farm land
起伏不平的广阔田地.
Having become simpler in form and of lower relief. Used of a landform.
地形起伏缓和的较为简单的、起伏较平的。用于形容地形
Relief must not be so excessive.
地形不应起伏很大。
The house is set in fifty acres of rolling parkland.
那所房子周围有五十英亩的起伏不平的草地.
And we think that the earth's crust is very uneven indeed.
我们于是认识到地表确实是起伏不平的。
The house stands in 500 acres of rolling parkland.
那所房子周围有500英亩起伏不平的草地.
A representation or description of the earth's topologic features above sea level, as on a map.
地形起伏图在地图上的高于海平面的地志的表现和描述
A Study of the Geomorphologic Forms Classification Based on Relief
基于地形起伏度的地貌形态划分研究
The foothills began as gentle rolls in the plain.
大平原上起初地势偶尔有些平缓的起伏。
Happy is the man who can endure with calm the highest and the lowest fortune.
能平静地忍受命运起伏的人是幸福的。
Elaborate Spatial Distribution of Precipitation of ChongQing on Terrain;
起伏地形下重庆降水精细的空间分布
Madagascar has a rugged mountain spine.
马达加斯加有一起伏不平的中央山脊。
We lived on a road called South Plains -- a swampy stretch of lowlands considerably below the hilly enter of town.
我们住在叫做南平原的路边。 南平原是一大片沼泽似的低洼地，大大低于起伏不平的城镇中心。
His chest heaved after the race.
在赛跑之后，他的胸部不停地起伏。
The present relief of more than 1000 ft was due to excavation.
现在的地形起伏超过1000呎是削蚀作用造成的。
The relief is clearly shown on this plan.
在这张平面图上, 地势的起伏表示得很清楚.
The Relief Degree of Land Surface in China and Its Correlation with Population Distribution;
中国地形起伏度及其与人口分布的相关性