问答题 翻译：This method is based on the difference in propagation velocity of artificially induced elastic waves through various subsurface strata.

问答题 翻译：Multiphase flow may be categorized into four different flow configurations or flow regimes consisting of bubble flow ,slug flow ,slug mist transition flow and mist flow.

问答题 翻译：As is well known gas mixture do not follow the simple gad laws but deviate from them when place under pressure.