The mechanism and pattern of reservoir are different between CBM and natural gas.

煤层气作为一种非常规天然气，其运聚机制和成藏模式与常规天然气不同。

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The pool forming mechanism and pattern are studied through analyzing hydrocarbon generation and expulsion history, trap development hi story and pool forming history.

通过烃源岩生排烃史、圈闭发育史和成藏史分析，研究了油气藏的形成机理，探讨了成藏模式。

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Water inrush mechanism and pattern in mining process have been analysed. At last, groundwater hazards preventing safety measures have been put forward for work face II622.

在此基础上，分析了该工作面回采过程中的突水机理和突水模式，提出了工作面在回采过程中应采取的防治水安全技术保障措施。

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Both sending and receiving stations would, however, need some mechanism to encode and control the frequency-hopping pattern.

ECONOMIST: Player-piano pioneer

Because the transforming and the filtering are done optically, this mechanism for pattern recognition is fast, allowing an image to be tested for the presence of a target in a single step.

ECONOMIST: Optical recognition

The work of Herbert Simon and others has shown that pattern recognition is among the most powerful, perhaps the foremost mechanism of successful problem solving.

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