干涸河道

NDWI and MNDWI can not distinguish the semidry watercourse from the noise in semi-arid regions.

利用NDWI和MNDWI提取半干旱地区水系，无法有效的区分水系内的半干涸河道与背景噪音。

In fact,what is called the gorge means a run dry river course that zigzagged along the mountain.

实际上，所谓的太和峡谷就是一条干涸的、依山蜿蜒曲折的河道。

Wadi Al-Hitan, Whale Valley, in the Western Desert of Egypt, contains invaluable fossil remains of the earliest, and now extinct, suborder of whales, the archaeoceti.

位于埃及沙漠西部的干涸河道的鲸谷，包含着早期残留的现已灭绝的珍贵人类所知道的最后一批有腿的鲸化石。

In the southwest part of Libya, a region called Fezzan is the beating heart of the Sahara, an inaccessible place full of sand seas, wadis, mountains, plateaus, oases, and mystery.

利比亚的西南部的一个叫作费赞的地区是撒哈拉沙漠跳动的心脏，是一个充满沙海、干涸河道、高山、台地、绿洲和各种神秘事物的人迹罕至的地方。

Revered for its dramatic sandstone and granite rock faces cut into a breathtaking span of sunbaked desert, Wadi Rum was made famous by Lawrence of Arabia, who based his operations there during the Arab Revolt.

敬畏来自那戏剧性的变化由沙岩和花岗石演变成今天令人震惊的被太阳晒干的沙漠，那古怪的干涸河道之所以出名是由于阿拉伯半岛一位叫做――劳伦斯的男子，他在阿拉伯人的革命时代创立了自己的事业。

Fastening their boat to a willow, the friends landed in this silent, silver kingdom, and patiently explored the hedges, the hollow trees, the runnels and their little culverts, the ditches and dry water-ways.

两个朋友把船系在一棵柳树上，上了岸，走进这静溢的银色王国，在树篱、树洞、隧道、暗渠、沟壑和干涸的河道里耐心搜寻。然后他们又登船，划到对岸去找。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。