For the viaducts of the line, a thorough description and analysis for the standard of design parameters, material, geology, main facts of design and construction is given.

主要对该线路高架桥的设计参数标准、材料、地质、设计特点及施工要点等作一全面分析论述。

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Up to now, the Earth's orbital parameters remain the only periodicities in geology subject to precise calculations and, therefore, may provide new scales for geochronology.

迄今为止，地球轨道参数的变化是地质尺度上惟一可以精确定量计算的周期现象，可以用作地质计时的标尺。

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Based on the key strata theory of the ground control and analyzing the condition of geology and mine in the shallow coal seam, the characteristic parameters of the key strata are educed.

基于岩层控制关键层理论，在分析浅埋煤层地质采矿等条件下，得出了浅埋煤层关键层的特征参数。

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