The commonly used theoretic research methods are approximately theoretical analysis and numerical discretization techniques in the field of rotating curved pipes. Such as perturbation method is one of the most used theoretic methods in this field.
理论方法和实验方法是自然科学研究基本方法，在旋转弯曲管道这一领域内常用的理论研究方法是近似理论分析和数值模拟，如摄动法就是这领域内基本的理论研究手段之一。
参考来源 - 旋转管道内对流换热特性以及开口端效应的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This article covers to various curved pipes with equal or different diameter.
本文适用于等径和变径的多种弯管。
A bow type head on this probe for measurement of rollers, pipes, cylinders and most curved surface.
一种端子上带有弓状的探头，专供测量滚轴、管道、圆柱体和极弯曲的表面。
Use curved and splitter pipes to steer the flow through all fires avoiding high-voltage.
使用转弯和分流器来引导水流来扑灭所有火势，但是得小心避开高压电！
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