Since it has a curve like a drain pipe, water will get caught there and keep bugs from getting into the tank.
由于它和排水管一样有一个弯道，里面就存有一些水把虫子挡在水箱外面。
Considering vessels have some curve, we solve the oscillatory fluid problems of a curved pipe with circular section by introducing a new coordinate system.
考虑到血管具有一定的弯曲度，本文引入了一种新的坐标系统，解决了弯管中的振荡流问题。
The shape of the curve would vary with liquid velocity, viscosity, pipe size, and pipe surface roughness.
曲线形状随液体速度、粘度、管子直径和管壁粗糙度而变化。
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