... 近星点运动常数 apsidal constant 管道内流动计算 internal flow solution 在临界范围内流动 flow in critical region ...
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根据原油在管道内流动特性及析蜡规律，提出了有效析蜡量的计算方法。
The calculation method of effective wax precipitation content was proposed according to the flow property of crude oil and wax precipitated mechanism.
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.
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