地震计

Specially constructed bore-hole seismometers are now available on the market.

目前在市场上已出售特制的钻孔地震计。

Development of seismology is marked first by seismologic observation techniques, the reification of which is the evolution of seismometers.

地震学的发展首先表现为观测技术的发展，而地震计的发展是观测技术发展的最基本环节。

Some fundamental problems in accurate measurement of seismometer transfer function are studied in detail.

本文详细地研究了对地震计传递函数测定的一些基本问题。

In this way, it is possible to pick out two quite different spectral ranges from one and the same seismometer

这样，一台地震计就能拾取两种截然不同的频谱范围。

Therefore, every seismometer must be calibrated, either before leaving factory or in use.

所以，一台地震计无论在交付使用前，还是在使用过程中，都需要进行标定。

A better solution would be to simultaneously record rotations at the same position as that of the seismometer.

笔者提出一个很好的解决办法，就是在同一位置用同一地震计同时记录下旋转运动。

The measurement of a seismometer's self-noise must be carried out in a noiseless station.

③地震计自身噪声测量必须在安静的台基上进行。

The system characteristics of seismometer can be described by many forms, one form can change to another easily, but the transfer function is important and convenient to describe the system characteristics.

地震计系统特性的可以有多种描述形式，各种形式之间可以相互转换，其中传递函数是最常用和最方便的系统描述形式。

The Model FBS-3A seismometer principle of operation, s-plane pole-zero plot and frequency characteristics are presented.

分析了FBS-3A型等宽频带力平衡地震计的基本原理、零极点的分布和频率特性。

White noise is ideal signal, its power spectral density is constant.

白噪声是一种理想的信号，该信号具有功率谱密度为一常数，是测试地震计频率特性的一种理想信号。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了