approximate amount

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。

An approximate price, figure, amount, etc.

大约的价格，数字，数量等。

What's the approximate amount of black stool each time?

那每次排出黑便的量大约是 多少 ?

Check the holding tanks for waste water and record the approximate sediment amount.

检查废水漕并做好沉淀物数量的近似记录.

If the amount of primary colors blended inks may turn black after the ( approximate ).

如不一原色油不朱等度搀和调配后可酿不败白色 ( 类似 ).