例句與造句

1. Channel gradient ratio
   河流梯度比
2. Stream gradient ratio
   河床坡度比
3. Standard test method for measuring the soil - geotextile system clogging potential by the gradient ratio
   用降比法測量土壤-土工織物系統(tǒng)可能阻塞的標準試驗方法
4. It's difficult to find gradient ratio in a sentence. 用gradient ratio造句挺難的