There were a large number of liquid components under ground when lava was moving, and the liquid constrict- ed after cooling, so the lava sunk from the surface.This is a general origin of lava pit.
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熔岩陷谷(坑)的成因多是由于熔岩隧道塌陷或熔岩底部局部存在大量气液组分,待冷却后体积收缩在重力作用下导致地表的熔岩陷落。
单词 There were a large number of liquid components under ground when lava was moving, and the liquid constrict- ed after cooling, so the lava sunk from the surface.This is a general origin of lava pit. 的词典定义。@海词词典-最好的学习型词典
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