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Stem leaves in whorls of 4, shorter petiolate; leaf blade oblong, sometimes ovate, to 3 X 1.4(--2) cm, pinnatisect; segments ca. 10 pairs, lanceolate, pinnatipartite, dentate, teeth callose.
在4轮生，短叶柄里的茎生叶；叶片长圆形，有时卵形，对3 X 1.4(-2)厘米，羽状全裂；约的裂片10 对，披针形，羽状深裂，具牙齿，齿callose。
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By Visual Basic 6.0 program, taken the distance between hole 200mm and buried depth 120～150mm as the optimization goal, the most optimum parameters range of the mechanism was obtained as follows: the initial angle between planet frame and the line formed from spraying-fertilizer needle-tip and planet wheel axle was -45°～-40°, the initial angular displacement of planet frame was 40°～50°, the distance between spraying-fertilizer needle-tip and the planetary gear axle center was 280～300mm, simultaneously, the semi-major axis of elliptic gear was 29.364mm, the teeth quantity was 23, the ratio of semi-minor axes and semi-major axis was 0.958, the radius of circular gear was 25mm.
对该机构进行运动学分析，建立了数学模型，以穴距200mm和入土深度120～150mm为寻优目标，应用Visual Basic 6.0软件编程得出满足机构运动要求的最优参数范围为：喷肥针尖和行星轮轴连线与行星架的初始夹角-45°～-40°、行星架初始角位移40°～50°、喷肥针尖与行星轮轴心距离280～300mm，此时椭圆齿轮长半轴29.364mm、齿数23、短半轴与长半轴比0.958，正圆齿轮半径25mm。
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Cymes loosely many flowered, often conspicuously pedunculate, rarely in a dense verticillaster; corolla tube subequal or saccate, never short spurred on upper side near base; fruiting calyx with 5 subequal teeth or 2-lipped.
松弛多花的，经常显著有花序梗的聚伞花序，在一浓的轮状聚伞花序的很少；花冠筒近等长的或囊状，从未短的激励的上面边近基部；果期花萼具5近等长的齿或二唇形。
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Bulb tunic reticulate; umbel laxly few flowered; pedicels 1.5--2 × as long as perianth; base of inner filaments with 1 short tooth on each side, apex of tooth entire
鳞茎皮网状；伞形花序稀疏少花；花梗1.5 --2 *倍于花被；内轮花丝具的基部1短齿在每边，齿的先端全缘 27 ALLIUM henryi 疏花韭
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Prunella：夏枯草属
我国仅藿香[A.rugosus4.夏枯草属(Prunella) 花萼有极不相等的齿,2 唇,果期下唇向上唇斜伸,以致喉部闭合;花冠上唇盔状;后对雄蕊短于前对雄蕊. 夏枯草(P.vulgaris L.),全株具白色粗毛. 轮伞花序成紧密的顶生穗状花序.
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stub tooth：短轮齿
"低峰螺纹","stub thread" | "短轮齿","stub tooth" | "短齿轮齿","stub tooth gear"