羽状，专业名词，用来表示植物的叶脉或小叶分支状态的术语。
羽状物 feather
羽状复叶 [植] pinnately compound leaf ; pinnate leaf
羽状的 [植] pinnate ; plumatus ; [解剖] bipenniform
三回羽状的 [生物] tripinnate ; thrice pinnate
奇数羽状的 odd pinnate ; [植] imparipinnate
羽状纹 Feather
互生羽状的 alternately pinnate
羽状裂缝 plumose fracture
二回羽状的 [植] bipinnate
羽状节理 [地质] Pinnate Joint ; [地质] feather joint
约有2吨的羽状碎片升起在超过半英里的空中。
An estimated two tons of material wasthrown into a plume which reached a height of more than half a mile.
除了水，羽状物中还包含一氧化碳，二氧化碳，氨，钠，水银和银。
Besides water, the plume also contained carbon monoxide, carbon dioxide, ammonia, sodium, mercury and silver.
根据以前的模型，电荷仅存在于火山灰羽状物的顶部和低端，那里时常发生华丽的闪电。
Models predicted that electrical charge should be limited to the top and bottom of any ash plume, which is often the site of spectacular lightning.
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