Cutting positioning accuracy to 0 . 01mm and cutting ability up to 9mm thick of stainless steel 切割定位精确度达0 . 01毫米和切断能力达9毫米板厚之不锈钢材。
3.
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。
