难检字字典在线查询

汉语拼音：dì zhèn qián zhào

震前发生的与地震有内在联系的地震活动性、地壳形变、地下水位、地电、地磁和动植物反应等异常变化。但因地震前必然要出现的前兆”尚未确证，故需对地震前兆作综合分析，以便准确作出地震预报。

• Despite years of searching for earthquake precursors, there is currently no method to reliably predict the time of a future earthquake.

  虽然对地震前兆的研究已有多年，但至今仍没有办法能够可靠的预计到未来地震发生的时间。

• In this framework, countries in which research on precursors is still encouraged and funded are very few.

  在这样的框架下，在继续鼓励对地震前兆进行研究的国家经费很少。

• Given that years of effort have led to no widely accepted precursors, perhaps there are no valid earthquake precursors.

  考虑到这么多年的努力没有导致任何普遍接受的前兆，有效的地震前兆或许就根本不存在。

• The bore-hole water temperature observation is a main earthquake precursor observation method of geothermal observation network.

  井孔水温观测是地热观测网中主要的地震前兆观测方法。

• Thousands peer reviewed articles were published for various earthquake precursors. I studied them and found their common problems.

  成千上万的经过同行审核的文章发布了种种地震前兆，我对它们进行了研究，发现了共同问题。

• Results show that the sharp-drop dynamic process of the Luwang well water level is caused by the mine drainage, and is not. . .

  结果表明，吕王井水位之所以产生急剧下降动态，是由于矿山排水影响所致，并非地震前兆。

• This prediction was based on a number of geophysical observations of precursor events as well as abnormal animal behavior.

  除了对地震前兆的地球物理现象观察，这次地震的准确预测还要多亏对动物异常活动的观察。

• Rough estimates suggest that any useful quake forecast method demands precursors that will prove correct 98 per cent of the time.

  粗略的计算显示，任何有价值的地震预测手段，其观测的地震前兆的准确率必须达到98%以上。

• These abnormal signals with certain time-space distribution are earthquake precursor possibly.

  这些在震前具有一定时、空分布的信息有可能是地震前兆。