波纹波导辐射器
Ripple-wall waveguide launcher
波纹内翅片管
inner fins tube of bellows’ type
wave-li ke internally finned tubes
tubes with internal wave-like longitudinal fins
波纹内导体
corrugated inner conductor
Corrugated-inner-conductor
内波、内潮汐沉积
internal-wave and internal-tide deposit
三折螺旋波纹波导
Three-fold helical rippled waveguide
双板波纹波导
dual-plate rippled-wall waveguide
同轴波纹波导
Coaxial corrugated waveguide
dispersion relation
弯曲波纹波导
curved corrugated waveguides
curved corrugated waveguide
3-D声波波动方程
3-D acoustic wave equation
BH型板波纹填料
high efficiency BH Mellapak packing