preliminary geological survey

基本解釋

But no tsunami followed Wednesday's aftershocks, the magnitudes of which ran from 5.9 to 6.3 in preliminary readings by the U.S. Geological Survey.
但周三余震后并沒(méi)有發(fā)生海嘯。據(jù)美國(guó)地質(zhì)調(diào)查局(U.S. Geological Survey)初步測(cè)定，余震震級(jí)從5.9到6.3級(jí)不等。
First, based on site survey, preliminary engineering geological evaluation on the wall rock was made and it was concluded that the wall rock was in unstable status.
首先，根據(jù)現(xiàn)場(chǎng)調(diào)查，對(duì)圍巖進(jìn)行了初步的工程地質(zhì)評(píng)價(jià)，認(rèn)為該巖體處于不穩(wěn)定狀態(tài)；
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Preliminary survey of the site finds that the area is flood land in geological structure. On this land suitable for setting up factory, no destructive earthquake has occurred before.
經(jīng)現(xiàn)場(chǎng)初步踏勘，項(xiàng)目選址區(qū)屬于河漫灘地，地質(zhì)條件較好；歷史上也不曾發(fā)作過(guò)毀壞性的地震，適合建廠。