污水在管道内流动的沿程损失与清水流动时近乎相等，所以目前在管道水力计算中所采用的处理方法是可行的。
The linear loss of sewage flowing in pipe is approximately equal to that of water pipe flow. So it's feasible to accept the method in use at present.
超声振动的引入降低金属流动阻力和流体压力的沿程损失，提高流动速度，提高了焊缝质量，也可有效解决厚板焊接困难。
The introduction of ultrasonic vibration reduces the metal flow resistance and fluid pressure loss, raises the flow speed, raises the welding quality and facilitates welding of thick plates.
在充分考虑了非平衡浇注系统的沿程损失与局部损失的情况下，从能量角度确定了非平衡浇注系统第二级分流道和浇口半径之间的关系。
After evaluating the route loss and the local loss of the imbalance injection system, the article confirms the relation of the second grade branch radius from the scope of energy.
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