您要查找的是不是：
- U型振荡管Oscillating U-tube
- 管pipe
- 球型振荡spheroidal oscillation
- 单U型管single U tube
- 环型振荡toroidal oscillation
- 极型振荡poloidal oscillation
- U型竖埋管U-tube
- 扭转型振荡torsional oscillation
- U型U shape
- 行波型振荡traveling wave type oscillation
- U型壳U - shell
- 地球环型振荡earth' s free torsional oscillation
- 卡皮管-由Ｍ型返波振荡管衍生的一种同步振荡器carpitron
- U型槽U -Shape Groove
- 余弦型振荡函数oscillating functions of cosine type
- U型箍U-ferrule
- 拒斥场场型振荡Barkhausen-Kurz oscillation
- U型拉槽U cutting
- O型返波振荡管O-type backward wave oscillator
- U型挡板U stop prate
