This means that it's not a circular coordinate system.
这意味着，它不是一个圆形坐标系统。
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。
For surface point measurement of large scale rotary object, a system based on circular cylindrical coordinate measurement is developed.
针对大型回转体型面测量问题，根据柱坐标机的测量原理，研制了大尺寸回转体型面点坐标及形心轴线测量系统。
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