wavetrapn.陷波器(陷波电路)waven.波浪；波纹；波v.挥动；飘动wavelet de-noising process小波降噪Wave-mean flow interaction北极涛动Waves lapped on the beach.波浪轻拍海滩。wavelet packet decomposition小波包分解wavelet Lipschitz polynomial小波Lipschitz指数waveguide critical dimension波导临界尺寸wave-front tip-tih error视场旋转waveguide cutoff attenuation波导截止衰减Wave- transparent material透波材料wave-division multiplexing波分复用

1. Where a trough and crest coincide we get the total amplitude zero.
   在波峰与波谷重合之处，总振幅实际上为零。
2. The sailor dislikes to have his ship get into the trough of the sea.
   海员很不愿意让船只陷入海浪的波谷之中。