这些网络使用多种地震仪器来监测地壳的运动。
Many kinds of seismic instruments are used by the networks to monitor the movements of the earth's crust.
根据这一原理，制造出了最初的地震仪器。
It was upon this principle that the first instruments were made.
所有上述资料都表明地震仪器的要求并不严格。
All of the foregoing material shows that seismic instrument specifications may be less stringent.
地震仪器采集系统的雷电防护也显得日益重要。
The protection of acquisition system of seismograph from lightning appears more important.
地震计是一种地震仪器，其物理常数是已知的。
A seismometer is a seismograph whose physical constants are so well known.
SN388遥测仪是世界上较完善的地震仪器之一。
SN388 telemetry instrument is one of complete seismograph in the world.
地震仪器设备的计算机化，单纯依靠线路分析检修十分困难。
Due to computerization of seismic instrument, maintenance of only depending on circuit analysis is very difficult.
它广泛用于瞬态压力测量，如冲击管、风洞以及地震仪器设备中。
It is used in measurement of pressure transients, such as in shock tubes, wind tunnels, and seismograph equipment.
设有物探研究院、地震仪器维修中心等生产、科研和经营基层单位。
Brigade has five seismic teams (two of them are first class), one geophysical prospecting institute, one seismic instrument maintaining center and other basic units.
图7中国人研制的第一台现代地震仪器(李善邦1939- 1942研制)。
Fig. 7 The first seismograph designed by Chinese scientist S. P. Lee (made in 1939-1942).
随着勘探精度的提高和勘探市场的不断扩大，对地震仪器的性能也提出了更高的要求。
With the continuous improvement of exploration precision and with the expanding of geophysical prospecting market, the requirements for seismic instrument's performance becomes higher and higher.
介绍黑龙江省物测队采用先进的地震仪器，严谨的施工方法，取得了较好的地质勘探效果。
Coal Field geological Measure Team of Heilongjiang Province has obtained the good geological effect by advanced seismic apparatus and the strict construction way are introduced.
地震数据采集系统的带道能力，也就是最大采集接收道数，是一个反映地震仪器硬件性能的重要指标。
Channel capacity, which is the largest channel number to receive seismic data, is an important indicator of the hardware performance of seismic instruments.
1703年法国Feuille发明欧洲第一台地震仪器——水银验震器(Dewey, 1969)。
In 1703, Frenchman Feuille invented the first seismic instrument of Europe — the mercury seismoscope (Dewey, 1969).
本文从检波器的结构及工作原理出发，系统地阐述了地震仪器中对检波器(串)的测试原理和测试方法。
This paper describes the theory and methods for testing geophone group (geophone strings) on the basis of its structure and principle in a systematic way.
转换器、D／A转换器是地震仪器的核心部件，其电路和印刷板的布置及设计直接影响到仪器的精度和指标。
Since A/D and D/A converters are the key components in seismic instruments, their circuit designs and printed circuit board (PCB) layout have a near relation with the feature of the instrument.
地震仪器在整个地震勘探生产过程中起着举足轻重的作用。地震仪器性能的优劣以及地震仪器使用的好与坏，在整个生产过程中显得尤为重要。
In the whole operation periods of seismic prospecting, seismic instruments play a decisive role, the performance and usage of seismic system is the most important.
在阿波罗计划中，宇航员在月在在月球表面上留下了四个地震仪。于1977年，这些仪器把最后的数据送回到地球，五年后，阿波罗计划就结束了。
During the Apollo program, astronauts left four seismographs on the lunar surface. The instuments returned their last data to Earth in 1977, five years after the Apollo program ended.
与此同时，在北美开展的“地球透镜”计划正在建立一个包括全球定位系统定位仪、地震仪和其他仪器所组成的洲际范围的网络，以研究地壳下面的活动情况。
Meanwhile, in North America, the EarthScope project is establishing a continent-wide network of GPS locators, seismographs, and other instruments to study what's happening below the crust.
这听起来似乎是一种愚蠢的想法，但是早期记录地震波的仪器（地震仪）正是采用了这中思路。
That sounds a silly suggestion, but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
与此同时，在北美开展的的“地球透镜”计划正在建立一个包括全球定位系统定位仪、地震仪和其他仪器所组成的洲际范围的网络，以研究地壳下面的活动情况。
Meanwhile, in North America, the EarthScope project is establishing a continent-wide network of GPS locators, seismographs, and other instruments to study what's happening below the crust.
新型地震仪、测井仪等大型石油勘探仪器系统都采用了这种结构。
Sophisticated petroleum exploration instruments such as seismometers and logging instruments have already adopted this architecture.
与此同时，在北美开展的“地球透镜”计划正在建立一个包括全球定位系统定位仪、地震仪和其他仪器所组成的洲际范围的网络，以研究地壳下。
Meanwhile, in North America, the EarthScope project is establishing a continent-wide network of GPS locators, seismographs, and other instruments to study what's happening below the crust.
SN388仪器是目前世界上先进的地震仪之一，近几年来，该仪器广泛应用于各种勘探项目中。
SN388 is one of the most advanced seismic exploration instruments in the world. In recent years, SN388 is widely used for many seismic exploration projects.
一种叫地震仪的仪器把这种反射来的振动波转送到记录器上。
Instruments called seismometers relay these reflected vibrations to a recording instrument.
一种叫地震仪的仪器把这种反射来的振动波转送到记录器上。
Instruments called seismometers relay these reflected vibrations to a recording instrument.
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