Velocity field in ship waves on the viscous fluid 在粘性流體中船行波的速度場
Along with increase of pressure , the parameters such as velocity , amplitude , main frequency and quality factor of seismic wave change big gradually , while change very weakly with the change of temperature . through testing research for artificial crack and pore model , we conclude that crack density , azimuth , opening and the change of pore have obvious influences on speed , amplitude , attenuation ( or quality factor ) and main frequency of seismic wave etc . but , seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters . therefore , it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude , attenuation and main frequency etc . ) 通過對人工裂縫和孔洞模型的超聲波實驗研究,可以認(rèn)為:裂縫密度、方位、張開度和孔洞密度的變化對縱橫波的速度、振幅、衰減(或品質(zhì)因子q )和主頻率等參數(shù)均有明顯的影響,但裂隙參數(shù)的變化對地震波動力學(xué)特征參數(shù)(振幅、衰減、主頻率等)的影響遠(yuǎn)遠(yuǎn)大于對運(yùn)動學(xué)特征參數(shù)(速度等)的影響,這為利用地震波的振幅、衰減和主頻率等屬性參數(shù)進(jìn)行裂縫和孔洞特征的檢測提供了可靠的實驗基礎(chǔ)。
波: wave的: 4次方是 The fourth power of 2 i ...速度: velocity; speed; blast; bat比賽的速度: tempo of the game發(fā)展的速度: speed of development公稱的速度: nominal speed黑暗的速度: the speed of dark很快的速度: before you could say jack robinson; before you know it極慢的速度: very slow pace加里的速度: the velocity of gary較高的速度: fair speed驚人的速度: terrific speed球的速度: speed of shuttle flight算法的速度: algorithm speed穩(wěn)定的速度: steady pace無效的速度: invalid feed相對的速度: relative velocity以的速度: the speed of涌進(jìn)的速度: influx rate中等的速度: at moderate speed波的相速度: phase velocity of wave意〕較快的速度,催趕的速度。: tempo frettevole超臨界的速度: super critical velocity; supercritical speed飛離時的速度: departure speed工業(yè)化的速度: the pace of industrialization