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研究了梁结构中的振动功率流，给出了梁中振动功率流的一般测量方法，并对实验研究结果进行了分析．研究结果表明：可以根据“无限梁”的速度导纳测量梁中的输入振动功率流．
The vibration power flow in beam structure is studied, and the general measurement method of vibration power flow in beam is given. The experimental research results are also analyzed. The results show that the input vibration power flow in the beam can be admitted according to the speed of “infinite beam”.