浅源地震 shallow-focus earthquake ; shallow earthquake
极浅地震 very shallow earthquake
浅层地震 shallow earthquake ; Shallow shock ; shallow seismic prospecting
极浅层地震 very shallow earthquake
浅水地震队 shallow water team
浅成地震 shallow earthquake
抛光辊浅黄色减震抛光 buff
浅层地震勘探 Shallow Seismic Exploration ; Shallow seismic prospecting ; Seismic prospecting in thin tectum
浅地震勘探 shallow seismic sounding
二是浅震（20km以上），由于地表震感强烈，因此也更危险。
Shallow ones (above 20km), whose full crust-displacing force is felt at the surface, are the danger.
在以往的地基勘查中，以钻探为主，物探方法主要有浅震和电法。
The drilling was the main method in the passed construction foundation explorations, and the electric exploration and shallow seismic exploration were the main geophysical methods.
钻探成本高，浅震和电法都存在有层状介质的局限性及勘探精度的问题。
But the cost of drilling is high, and the electric or shallow seismic explorations are limited by layer media and have lower precision.
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