水库诱发的地震应该比自然发生的地震有更多前震。
Zipingpu has such a system. A reservoir-triggered earthquake should have more foreshocks than a natural earthquake.
我们能做的就是提高建筑标准，改进地震前震的监测技术。
What we can do is raise building standards and improve monitoring of foreshocks.
这次地震已有前震，包括两天前在距此25英里远处发生的一次7.2级地震。
The earthquake was preceded by foreshocks, including a 7.2 magnitude earthquake that occurred two days earlier, about 25 miles away.
有时会发生前震，但我们并不能区分前震和其他地震，所以它们对于预测地震并不是很有用。
Sometimes there are foreshocks, but there is nothing about a foreshock that distinguishes it from any other earthquake, so they're not very useful for prediction.
它揭露了震前45分钟内，数次前震从震源一层层扩散开来——这是首次得出前震与大地震之间存在联系的结论。
This revealed that foreshocks rippled away from the source of the rupture in the 45 minutes before the quake - the first time that foreshocks have been conclusively linked to a major earthquake.
地震序列类型为前震—主震—余震型；
答：“前震”和“余震”是两个相关的术语。
前震，余震有何差异？
本文讨论了地震序列中前震、主震和余震的烈度。
This paper discusses the intensity of the earthquake sequences, which include the foreshock, main shock and aftershock.
前震是更大强度地震发生之前在同一位置发生的地震。
Foreshocks are earthquakes which precede larger earthquakes in the same location.
其共轭破裂特征在地震形变带展布、烈度等震线形态、前震和余震分布等方面表现明显。
Their characteristics are shown clearly on the seismic deformation belts, isoseismal shapes, foreshocks and aftershocks distributions.
用姚安地震序列前震、主震和余震的78个震源机制解，分析了序列震源断层和震源应力场特征。
We use 78 focal mechanisms of the fore shocks, main-shock and after shocks of the Yao 'an earthquake sequence to analyze the characteristics of focal fault and stress field.
连全世界的地震实验室里摆放着的精密的震动监测仪都无法测出的地震前震，似乎也不会被动物所察觉。
It seems unlikely that these animals could have detected seismic "pre-shocks" that were missed by the sensitive vibration-detecting equipment that clutters the world's earthquake laboratories.
这次8.9级地震之前曾发生地震学家所说的“前震”，包括周三发生的于周五震中以南约25英里的7.2级地震。
The 8.9 quake was preceded by what seismologists call foreshocks, including a 7.2-magnitude quake that occurred Wednesday, about 25 miles south of Friday's epicenter.
另一种理论认为其它动物在震前能感觉到人类察觉不到的弱震。
Another theory holds that other animals can sense weak shocks before an earthquake that are imperceptible to humans.
要确定孔隙水压的影响，科学家们需要震前孔隙水压的详细统计资料。
To establish the effect of pore pressure, scientists would need detailed statistics about it from before the earthquake.
震前：结古城是通往拉萨之路上，一个介于康巴和安多之间的古老市镇。
Before the earthquake: Jiegu town, an ancient trading mart between Kham and Amdo on the road to Lhasa.
甚至在震前，海地也是一个贫穷的国家，环境恶化，依赖援助，几乎没有基础服务。
Even before the earthquake Haiti was poor, environmentally degraded and aid-dependent and had few basic services.
但是无疑在震前建造的许多建筑物存在严重的质量问题。
But there is no doubt that many structures built before the earthquake had been badly constructed.
天文时纬残差震前异常是一种相当普遍的现象。
Anomalies of astronomical time-latitude residual before earthquakes are considerably general phenomena.
震前地球基本磁场出现了趋势性异常。
There existed tendency anomalies in the basic geomagnetic field before these earthquakes.
震前主应力轴的旋转。
黄壁庄等地应力台站有较明显的异常反映，震前对异常进行了追踪分析，并提出了分析预报意见。
Huangbizhuang and other terrestrial stress stations showed clear anomalies, we made a trace analysis of the anomalies and made a prediction before the earthquake.
震前综合危险度出现了一次明显的高值异常变化，震后危险度很快下降恢复到正常水平。
Obvious increase in the synthetical risk degree occurred before the earthquake, and after the earthquake, the risk degree rapidly recovered to the normal level.
震前，日本汽车公司就把生产地从本土撤离以分散风险，将生产地尽量迁至销售地，这场地震会加快迁移进程。
Japanese car firms were already shifting production away from Japan, to spread their risks and move closer to their customers. The quake will accelerate this process.
在震前和震后的一段时间里，包括福布斯亚洲专栏作家卡尔·德菲尔德在内的多名市场专家都建议买入日本那些看似低价的证券。
Several market pundits, including Forbes Asia's columnist Carl Delfeld, have suggested buying Japan's seemingly cheap equities in the period before and after the quake.
并在此基础上以唐山7.8级地震为例，提出用方差检验的方法判别震前异常。
On the basis of the above-mentioned, the Tangshan M7.8 earthquake is used as an example to show how the anomalies are identified by the variance test method.
3月18日世界主要央行的协同行动- - -自2000年以来的首次此类行动- - -已将日元对其他货币价值拉回至震前水平，但本周又持续攀升。
Coordinated action by the world's major central Banks on March 18 - the first such actions since 2000 - drove the yen back down to its pre-quake levels, but it's been climbing again this week.
即使银行也受到影响：内阁成员暗示到，通过免除一部分TEPCO的震前贷款，他们也分担了痛苦。
Even Banks are affected: cabinet members have suggested they share the pain by forgiving a portion of TEPCO's pre-quake loans.
即使银行也受到影响：内阁成员暗示到，通过免除一部分TEPCO的震前贷款，他们也分担了痛苦。
Even Banks are affected: cabinet members have suggested they share the pain by forgiving a portion of TEPCO's pre-quake loans.
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