1) Low-velocity zone
低波速带
2) surface wave low-rate zone
面波低速带
3) Low-velocity distribution of P-wave
P波低速异常条带
4) Low velocity zone
低速带
1.
The inversion results of the Pg data acquired by wide-angle seismic reflection/refraction data of 11 shots reveal that the basement velocity structure of the eastern part of A\'nyemaqen suture zone is characterized by a low velocity zone while the velocity is even in its adjacent areas.
对11炮宽角地震反射/折射的Pg波走时数据进行了反演,结果表明:阿尼玛卿缝合带东段基底速度结构整体呈低速带分布,两侧的速度分布相对均匀;缝合带内基底界面剧烈下凹,最深达5。
5) low velocity layer
低降速带
1.
Effects of irregular topography and low velocity layer on reflections.;
起伏地表及低降速带对反射波的影响
2.
It is difficult to make certain of suitable shooting layers by ordinary shallow survey methods in Youquanzi area of Qiadam basin because of significant thickness of dry layer on the surface and thick low velocity layers (LVL).
柴达木盆地油泉子地区因地表干燥层巨厚,低降速带厚度大,使用常规浅层调查方法难以确定合适的激发层位。
3.
Using refraction method to detect low velocity layer in intricate area is difficult in field and poor in effect, generally.
在地表地形复杂的地区进行低降速带探测时,采用常规地震小折射方法,在现场难以实施,而且效果往往不佳。
6) low-speed streak
低速条带
1.
Characteristics of low-speed streaks in near-wall turbulence as disturbed by cylinder wakes;
圆柱尾迹影响下近壁湍流低速条带的特征
2.
The characteristics of low-speed streaks in the near-wall region of turbulent cylinder wake/boundary layer interacting flows are investigated employing hydrogen bubble flow visualization.
结果表明,与没有尾迹扰动的情况相比,在圆柱下游低速条带的平均展向间距减小,圆柱离壁面较近时这种减小更显著,可达到22%。
补充资料：波速
波传播的速度。①单色波的波速v与波长λ、波源振动频率f之间的关系为：v=λf。机械波的波速由介质的弹性模量和密度所决定。在室温下，声波在空气中的传播速度约为340米/秒；电磁波在真空中传播的速度等于光速，约为3×108米/秒。②海浪波速(c)的大小取决于波长(λ)或海区水深(h)。当海区水深很大时，波速仅与波长有关，而与水深无关，即为c2=gλ2π；当海区水深很小时，波速仅与水深有关，而与波长无关，即为c2=gh。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条