1) sound-time ways of the first wave
首波声时法
2) acoustic head wave
声波首波
1.
To understand the propagation mechanism of the acoustic head wave and its accompanying electromagnetic field during logging in a porous formation, we studied the displacement characteristics of the wave.
声波测井时孔隙地层中的声波首波平行于井轴沿井壁传播 ,它既有轴向位移分量 ,又有垂直于井壁的位移分量 。
3) interval transit-time method
声波时差法
1.
Based on thickness of the remnat stratum and denudation one of the stratum,which can be obtained by the interval transit-time method,reconstruction of the paleogene palaeogeomorphology,including Hetaoyuan formation and Liaozhuang formation,was made for the southern steep slope zone of Biyang Sag in NanXiang Basin by a well-to-seismic integrated method.
本文采用井—震联合地层恢复法,求取现今残留地层厚度,并用声波时差法计算剥蚀量校正,恢复了南襄盆地泌阳凹陷南部陡坡带古近系各主要沉积时期(核三下段,核三上段,核二段,核一段,廖庄组)古地貌,探讨了其古地貌演化特征。
4) head wave traveltime
首波走时
6) ultrasonic flight-time
超声波声时
1.
A high- precision ultrasonic wave instrument controlled by a personal computer is used to precisely measure the ultrasonic flight- time under the conditions of concentrations 0-48% and temperatures 0-40℃.
本文通过一套由PC286微机控制的超声波测量仪”’,测定了浓度为0％～48％、温度为0～40℃的三聚甲醛和二氯乙烷混合液的超声波声时,计算了超声波声时、温度和浓度间的相互关系,为三聚甲醛浓度的超声在线检测提供了依据。
补充资料：又（一本此首同前第一首为二首）
【诗文】：
春来半月度，俗忌一时闲。不酌他乡酒，惟堪对楚山。
【注释】：
【出处】：
全唐诗：卷89_20
春来半月度，俗忌一时闲。不酌他乡酒，惟堪对楚山。
【注释】：
【出处】：
全唐诗：卷89_20
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