管状传导系统(TDGS)是将日光引导到建筑物中心部位的线性装置。

Tubular daylight guidance systems (TDGS) are linear devices that channel daylight into the core of a building.

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随着电力电子技术的飞速发展，非线性装置被广泛应用于电力牵引系统，这就不可避免地引发了谐波危害问题。

With rapid development of electric power and electron technique, nonlinear equipments are applied in power drawing system widely, which will cause harmonic harm question inevitably.

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这些磁场，由称为线性同步电机的装置产生，升起和推动胶囊前进。

These fields, generated by devices called linear synchronous motors, both levitate the capsules and propel them forward.

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