以按空间频谱展开方法，处理任意光束的非线性谐波转换过程。
For the nonlinear harmonic conversion of real laser beams, we have developed a theory by applying the spatial spectrum analysis to the nonlinear coupling.
电力变流器和其他非线性负荷向电力系统“注入”谐波电流，引起一系列问题。
The power converters and other nonlinear loads "inject" the harmonic current into the power systems and cause a series of problems.
认为谐波源来自系统侧，除了非线性负荷外，主要是由大型电力变压器激磁电流所造成。
The harmonic comes from power system side, which is caused mainly by exciting current of the large capacity transformer besides the nonlinear loads.
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