This standard provided the calibration means of digital seismometer .

标准简介：本标准规定了数字地震仪.

Seismometer is a great invention that was invented in east han dynasty by zhang heng .

地动仪是我国东汉时期张衡的一项大发明。

Each has a seismometer for detecting earthquakes , an infrared sensor to detect heat from volcanic explosions , a sensor to detect ash clouds , and a global positioning system to sense the ground bulging and pinpoint the exact location of seismic activity .

每个机器人都有一台探测地震的地震仪，一个探测火山爆发释放出的热量的红外线传感器，一个检测灰云的传感器，和探测地面膨胀，以及确定地震活动精确位置的全球定位系统。

A seismometer is a seismograph whose physical constants are so well known .

地震计是一种地震仪器，其物理常数是已知的。

Would it shake enough to indicate its location on a seismometer ?

它的振动会在地震计上显示它的地点吗？