查询词典 seismograph

Technical parameters and characters of sampling system determine that seismic wave amplitude recorded by seismograph is approximate relative amplitude. Using these data necessarily leads to serious distortion of inverse parameters. So using Born approximation can only obtain the location of interface even if the earth medium is little disturbance.

采集系统特性和技术指标决定了所记录的地震波振幅值为近似的相对振幅，用这样的相对振幅作为地震波参数反演的振幅真值依据，必然导致反演参数值的严重失真。

Zhang Heng of the Han Dynasty over 1,800 years ago invented a seismograph to determine the location of earthquakes and the celestial globe that showed the movement of the sun, moon and other stars.

汉代张衡发明了测定地震方位的地动仪和演示日月星辰的浑天仪。

Many special mechanical design and application such as missiles and was in the seismograph censer to wait all have originality.

许多专用机械的设计和应用，如指南车、地动仪和被中香炉等，均有独到之处。。。。

The idea of a logarithmic earthquake magnitude scale was first developed by Charles Richter in the 1930's for measuring the size of earthquakes occurring in southern California using relatively high-frequency data from nearby seismograph stations.

以对数方式来记录地震等级的概念，最早是由查理斯。里查德在十九世纪三十年代提出的。他当时正在测量南加里弗利亚的地震等级，使用的是附近的地震检测台站的相关高频数据。

Based on VHZ data recorded by 7 stations of China digital seismograph network for Nov. 14, 2001, earthquake in the west of the Kunlun mountain pass, we extracted spherical mode of 0S4-0S76 of the earth free oscillation using power spectral density estimation. Because the frequency response of seismograph in China digital seismograph network suppress information of solid tide, we do not need to remove the solid tide in our procession.

利用中国数字地震台网改造后的7个台站的VHZ波形资料，采用功率谱密度估计方法，利用中国数字地震台网地震仪对低频信号压制的特点，在没有对资料去除固体潮影响的情况下，提取了2001年11月14日昆仑山口西地震激发的0S4-0S76地球球型自由振荡，并与地球初步参考模型的理论自由振荡周期进行对比，结果表明与PREM预测的球型自由振荡周期符合得很好。

China Digital Seismograph Network ; earthquake to the west of the Kunlun mountain pass ; power spectral density estimation ; toroidal free oscillation of the earth

中国数字地震台网；昆仑山口西地震；功率谱密度估计；地球环型自由振荡

The other problem in seismic inversion is that the frequency information and amplitude real value recorded by seismograph are incomplete and severely absent.

地震波反演的另一个障碍，主要是所记录的地震波响应中频率信息及相应的振幅真值的不完整与严重缺失。

We developed two kinds of new products for low-power and high-resolution mine shallow seismograph, mine geology detector and mine tunnel predictor. By field experimental verification, they can solve effectively the detecting problem of small geological structure and coal seam thickness around underground coal mine tunnel. Their performance and function of reached or exceeded the level of domestic similar products, and their power consumption (≤4W) is lower than the advanced high-resolution shallow seismographs at home and abroad.

开发出两款低功耗高分辨率矿井浅层地震仪产品——矿井地质探测仪和矿井巷道超前探测仪，通过现场试验验证，其可有效地解决煤矿井下巷道四周浅层地质小构造勘探和煤层厚度探测问题，仪器性能和功能达到或超过国内同类产品水平，且仪器的功耗(≤4W)小于国内外先进的高分辨率浅层地震仪产品

"Houfeng Seismograph" is the earliest seismograph in the world.

候风地动仪是世界上最早出现的地震仪。

Due to the demand of the seismograph in the seismologic observation, this thesis proposes the scheme of a kind of digital seismograph with high precision and multi-channel based on the thesis of the virtual instrument.

针对地震观测中对地震观测仪器的要求，本文采用了虚拟仪器技术的思想和方法，探讨并提出了一种高精度多通道地震观测仪器的实现方案。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。