径流的英文：
runoff
drain
radial flow
runoff
drain
radial flow

参考例句：

runoff loss on sloping land
坡地径流损失

High-altitude photos show a brown ring of soil and human waste runoff hugging the coastline.
高空摄影照片显示，一条环状的褐色土壤带和人类排泄物径流环抱着整个海岸线。

The cultivated field received not only its own share of rainfall but all of the runoff from the catchment.
耕地不仅获得它自己那份雨水而且还接受集水区的全部径流。

runoff是什么意思：
n. 径流；排除的废物，排泄；决胜投票，决胜选举；附加赛，决胜赛

decide (a game) by a runoff.
通过一场决赛来决定比赛结果。

It's a reservoir for collecting surface drainage or runoff.
这是一个收集地面污水或漏水的贮水池。

There will be a runoff between these two candidates on December 9th.
12月9日将举行这两位候选人的决胜选举。

drain是什么意思：
v. 排空；喝光；耗尽
n. 下水道，排水管；消耗

draining scheme
排水规划

draining trench
小排水沟

He drained a glass of claret.
他一口喝干了一杯红葡萄酒。

radial是什么意思：
adj. 辐射状的；光线的
n. 子午线轮胎；射线，光线

This car is fitted with radial tyres.
这辆车配有子午线轮胎。

A radial part, such as a ray, spoke, or radius.
放射部辐射状的部分，如光线、轮辐或半径

The continuum of the corona is essentially radially polarized
日冕连续区基本上是经向偏振。