地壳震动 meaning in English

crustal shock

Oceans , land masses . no tectonic instability or radiation
海洋，陆地…没有地壳震动和辐射
The new seismometers used were sensitive to seismic waves with periods from 0 . 03 to 1 second . the precision of epicentre determination was improved to within 10 kilometres and ground motions down to one nanometre could also be detected
03秒至1秒的震动最为灵敏，震央定位精确度提升至十公里以内，并可以测量振幅小至一纳米的地壳震动。