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叶互生，掌状或者3小叶，很少羽状复叶。Leaves alternate, palmate or 3-foliolate, rarely pinnate.

一头有裂口用来拔钉子的锤子。Divided or cleft in a pinnate fashion. Used of certain leaves.

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它的阔大的、羽状的、热带的叶子，看起来很奇怪，却很愉快。Its broad pinnate tropical leaf was pleasant though strange to look on.

数值模拟程序采用VB6.0编写，模拟了矿井瓦斯羽状钻孔预抽过程。The process of mine gas pre-draining by pinnate boring was simulated with VB6.0 codes.

定向羽状水平井技术是近几年兴起的一项煤层气的增产技术。Pinnate horizontal multilateral well is an emerging stimulating technology in recent years.

发现了如羽状脉体等特殊的指向标志。It is found that there are some special kinds of shear sense indicators such as pinnate veins.

长有羽状叶子和红白花的主要在美国热带的灌木和乔木的属。Genus of chiefly tropical American shrubs and trees having pinnate leaves and red or white flowers.

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叶片多为羽状或掌状，成熟时大小变化大，有时长达25公尺，在叶柄与叶片交接触多有突起。Leaves are usually pinnate or palmate, and differ enormously in size at maturity, sometimes reaching a length of about 25 m.

定向羽状水平井技术是近几年兴起的一项煤层气地面抽采技术。The directional pinnate horizontal multilateral well has been a rising technology in recent years for increasing coalbed methane recovery.

通过经济评价，利用定向羽状水平井技术开发沁水煤层气田具有较高的经济效益。According to the economic evaluation, it has better economic benefit to exploit Qinshui coal-bed gas field with directional pinnate horizontal wells.

建立了对非均质各向异性双重介质煤层气进行定向羽状水平井开采的数学模型。A mathematical model for describing coalbed gas recovery in heterogeneous anisotropic dual medium of pinnate horizontal multilateral wells was established.

结论尺侧腕屈肌尺侧亚部和桡侧亚部都是半羽肌，尺侧亚部能产生多于桡侧亚部1倍以上的肌力。Conclusion Ulnar compartment and radial compartment are half pinnate muscle, the force produced by ulnar compartment is more 1 times than radial compartment.

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启动压力梯度的存在会使煤层中羽状水平井的降压效果变差，从而减少煤层气的产量。The existence of start-up pressure gradient can make depressurization effect of pinnate horizontal multilateral well get worse, which promotes gas production reduced.

定向羽状水平井技术适合于开采低渗透储层的煤层气，集钻井、完井与增产措施于一体。The technique of directional pinnate horizontal wells, which joints the drilling, completion and stimulation jobs together, adapts to exploit coal-bed gas with low permeability.

从该技术的发展趋势看，随着石油工业的进步，它将成为继20世纪定向井、水平井技术之后21世纪的重要技术。It will be the important technique in 21th century with the developments in petroleum field, after the technology of pinnate wells and horizonal wells are developed in 20th century.

利用水平羽状分支井来开发利用煤层气，是一项新的钻探技术，它有别水平钻井，有其独特性。Making use of horizontal pinnate branch well to develop and utilize coal seam gas, is a new drilling technique, which is different from horizontal drilling and has its own uniqueness.

软件的应用对这一项新技术在我国的推广应用和煤层气的大规模开采能够起到重要的指导作用，并取得较好的经济效益。The simulation program will considerably promote the extensive use of pinnate horizontal multilateral well in China and coalbed methane production on large scale and better economical gains.