1) 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。
2) low velocity zone
低降速带
3) weathering and sub-weathering correction
低降速带校正
1.
Hence,to understand the record mode,datum-level selection,weathering and sub-weathering correction method and data processing of VSP data and seismic profile are prerequisites for well utilizing VSP data and horizon calibrations.
了解VSP资料和地面地震剖面在记录方式、基准面选择、低降速带校正方法以及资料处理过程是用好VSP资料、做好层位标定的前提。
4) reducing wind speed
降低风速
5) despinning
降低转速
补充资料：低都儿低
1.低而又低，很低。
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