The tube is graduated so that flowrate can be read directly on a linear scale.
管子上刻以标度，以便在线性标度上可以直接读出流动速率的数值。
2
The flowrate can be customized according to the need to be linear, equal percentage or some special shape to obtain different performance of the flow curve.
流道口可按需要定制成线性、等百分比或一些特殊形状从而获得不同性能的流量曲线。
3
The results showed that soil detachment rate increased with the increase of flow shear stress, their logarithm was linear.