A new method for reducing core loss and excitation current in transformers that utilizes the fundamental principles of third-harmonic flux modulation is proposed in this paper.
本文对变压器节能提出了一个崭新的观点，即通过三次谐波磁场调制机理来降低变压器的铁耗和励磁电流。
When the design of reducing vibration for a real structure is carried out, the case that the excitation on the structure is unknown is often met.
对实际结构作减振设计时，经常遇到结构激励源未知的情况。
The mechanism of reducing aerodynamic drag by acoustic excitation was briefly analyzed.
本文首先简要地分析了声激励减阻机理。
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