tube domain的意思|示意

With the FFT analysis it is analyzed that the pressure surge changing laws in the taper pipe and draft tube in time domain and frequency domain.

通过水压力脉动数据的FFT频谱分析，研究了直锥段和尾水管内部在不同位置不同工况下的压力脉动在时域及频域上的变化规律。

Floor heating tube is a pipe with special application domain. The author compares different property of different pipe, states that it is important to select heating tube material for project planner.

地板采暖管是一种埋入地下、应用领域较为特殊的管材，作者比较了不同管材有其不同的性能，阐明如何选用采暖管材料，是工程设计人员必须注意的问题。

This paper present application of vortex tube as refrigerator in several different domain.

本文介绍涡流管制冷在各种不同领域内的应用。