氦气在林甸5.1级地震前具有明显前兆异常变化。
And the helium content anomaly before the Lindian M_S 5.1 earthquake is also notable.
中国大陆黑龙江省大庆市林甸县的邮政编码是166300。
The postcode of Lindian County, Daqing City, Heilongjiang Province, China is 166300.
林甸断陷地层的暗色泥岩并不发育，有机质丰度总体上属于中等水平。
Dark mudstones are widely developed in Lindian fault depression, organic matter abundance in Marine source rocks is in middle level.
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