low-velocity zone

常見例句

Pseudo-Rayleigh wave at low frequency (high velocity)can be used for the computation of shear wave attenuation in virgin zone.
利用低頻偽瑞利波（高速），能很好地估算原狀地層的橫波衰減。
The lowermost mantle layer is above the core mantle boundary (CMB) and composed of D" region and ultra-low velocity zone (ULVZ)."
地幔底層由具有高地震波速和高密度的D″區(qū)和超低速帶（ULVZ）組成。
The most remarkable feature of the upper mantle is the low-velocity zone. as suggested by its name, this is a region in the upper mantle in which there is a decrease in the speed of seismic wave.
上地幔一個(gè)最顯著的現(xiàn)象就是低速帶，就像這個(gè)詞名所表達(dá)的那樣，在上地幔存在這麼一個(gè)區(qū)域，在那裡地震波波速會(huì)發(fā)生減慢。