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- Model JDF-1 Borehole Seismometer JDF-1型井下地震计
- borehole seismometer 井中地震检波器
- Orientation is very important for a seismometer, whether it is installed on surface or in borehole. 摘要无论地震计在地表或是井下使用，都必须精确定向。
- The seismometer was invented by Zhang Heng. 地震仪是由张衡发明的。
- How can I make my own seismometer? 问：我怎样才能做一个我自己的测震仪？
- A similar development in the USA is termed triaxial seismometer. 美国研制的与此相似的地震计称为三位地震计。
- How is the movement of the seismometer converted into a seismogram? 问：测震仪的运动是怎么转换成震动图的？
- At last, the curve of seismometer frequency response is given. 最后给出了检波器频率响应曲线。
- What is a seismometer? What are seismographs? How do they work? 问：地震检波器是什么？地震记录仪又是什么？它们是怎么工作的？
- The quality of borehole directly influences the effect of blasting. 钻孔质量的好坏,直接关系到爆破效果的优劣。
- Borehole fluid holdup defines what type of reinvasion occurs. 井内流体持率决定发生二次侵入的类型。
- 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。
- Earthquakes are recorded with a seismometer, also known as a seismograph. 地震检波器，也被称为测振仪，可记录地震。
- A borehole image of rock layers indicating an underground point bar. 指示某地下曲流沙坝的一幅岩层钻孔图像。
- Borehole magnetic technique has been widely used in geology and CCSD. 井中磁测技术在地质、大陆钻探等方面都有广泛的应用。
- A new method for measuring the borehole water holdup is given in this paper. 论述了一种新型的油井持水率测定方法。
- Borehole hydromining is a kind of safe and efficient new mining method . 钻孔水力采煤是一种既安全、又能极大地提高资源利用率的新的采矿方法。
- An earthquake with a magnitude of less than 2.0 is so slight that usually only a seismometer can detect it. 小于2.;0震级的地震非常轻微，通常只有地震检波器才能探测到。
- Orientation relying on magnitism must have error if there is ferromagnetism around the seismometer. 当地震计周围存在铁磁性物质时，使用传统的磁定向会引起非常大的误差。
- Ocean borehole broadband seismometer system deployed by ODP Leg191 由ODP Leg191布设的海底井下宽频带地震仪系统
