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pinnate adj.1.【植物;植物學】羽狀的,有羽狀葉的。2.【動...

pinnated

It is determined by the characteristics of chinese coal seams that they are difficult to exploit ; this paper analyzes three main stimulation technologies : hydraulic fracturing , displacement of multi - gas and oriented pinnate horizontal well - drilling , which can provide technical guidance for developing coal - bed gas more efficiently and reasonably 此外還分析了目前國內外煤層氣增產的3項主要技術:水力壓裂改造技術、煤中多元氣體驅替技術和定向羽狀水平鉆井技術。

North american perennial with hairy basal pinnate leaves and purple flowers and plume - tipped fruits 北美洲的一種多年生植物,具有多毛的羽狀基葉,紫色的花朵,果實頂端有宿存的羽毛狀花柱。

Numerical simulation of pinnate horizontal multilateral well for coalbed gas recovery 煤層氣羽狀水平井開采數值模擬研究