什么叫圆形壳的R-L型振动
我在看一篇关于纳米管波动的论文时，看到这样一句话：The first difference is that the phase velocity for the first R–L mode in the axisymmetric mode represents a uniform variation at smaller wavenumbers, but a nonuniform variation is found for other motions at nonzero m.(Application of nonlocal elastic shell theory in wave propagation analysis of carbon nanotubes. Smart Mater. Struct. 16 (2007) 178–190)
不知道什么意思.
谢谢！
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