火山岩中白榴石的晶体结构，来自德国波恩大学施泰因曼学院的迈克尔·m·雷斯教授用偏振光照射白榴石并拍摄到了该照片。
Crystal twinning patterns in a leucite crystal from volcanic rock, observed in polarized light by Dr. Michael M. Raith of the Steinmann Institut, University of Bonn, Bonn, Germany. Dr.
针对火山岩储层的地质和地球物理特征，提出了用常规测井方法评价火山岩储层的理论和方法。
According to geological and geophysical characteristics of volcanic reservoir, a new evaluation method for the special reservoir using well logging data is put forward.
火山能量石挂件不同于普通的饰品挂件，它是用一种远古火山的火山沉积物-火山岩。
Volcanic energy stones pendant is different from the ordinary jewelry ornaments, it is to use an ancient volcanic volcanic sediment - volcanic rocks.
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