种翅
- 网络Seed wing;winged diaspores;Caruncle;w inged seeds
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对各种类型种子的形状、颜色,种翅的宽窄、颜色等性状进行比较,进一步测量种子的长、宽、厚,并进行统计分析。
The seed appearance of each type , seed color , caruncle width and color were compared and analyzed .
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结果表明:祁白芷种子和种翅膜中均含有一定活性的水溶性内源萌发抑制物质。
The results show that both the seed and the seed membrane of Angelica dahurica contain soluble inner inhibitory substances .
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银杉和水杉的种子和种翅间在元素组成和平均质量分数上也有所不同;水松叶的3种类型叶的元素组成相同,但其元素的平均质量分数差异显著。
Among three type leaf of Glyptostrobus pensilis , the elemental composition is the same , but average mass fraction is very different .
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厚果鸡血藤提取物对两种同翅目害虫的生物活性
Biological Activity of Extracts from Millettia pachycarpa against Two Homopteran Insects
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透翅蛾一种透翅蛾科的朝生暮死的蛾子,有无鳞片、透明的翅和黄蜂般外观。
Any of various diurnal moths of the family sesiidae , having scaleless , transparent wings and a wasplike appearance .
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本文对空气流过镍、铜材料泡沫金属结构和2种板翅结构的对流换热进行了实验研究。
Forced convection heat transfer of air in nickel and copper metal foams and two mini-fin structures was investigated experimentally .
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在对热泵热水器进行总体热量衡算的基础上设计了一种管翅式储能换热器,给出了储能换热器的具体结构参数。
A fin-tube energy storage heat exchanger is designed based on the total heat balance of the heat pump water heater and its concrete structure parameters are determined .
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分别计算了两种拍翅模型下,左右翅拍动所产生的气动力和气动力矩,通过对两种拍翅模型的运动学和动力学的分析,导出了微型拍翅式飞行机器人机体的运动微分方程。
By the analysis of kinematics and dynamics for two kinds of flapping models , the paper exports the moving differential equations for body of micro flapping robot .
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该蜂的雌性幼虫是松突圆蚧雌蚧的初级内寄生蜂,而雄性幼虫则是次级寄生蜂,重寄生在同种或它种膜翅目的老熟幼虫、预蛹和蛹上。
Pitysophila females , whereas male larvae are secondary parasites , and develop on the mature larvae , prepupae and pupae of their own kind and other hymenopterous species .
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一种计算板翅式换热器二次表面换热的新模型一次表面热交换器动态特性的数值模拟
New Model Computing the Secondary Surface Heat Exchange of Plate-Fin Heat Exchanger
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一种新型热翅板式电子散热器的模拟研究
Numerical simulation on thermal performance of a novel brazed heat fin-plate for electronic devices
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为研究等截面一维直翅优化问题,从Schmidt最优翅片形状假定出发,通过理论分析得到一种优化的直翅周线表达式,并找出了优化后的翅片散热效率与其几何外形之间的关系。
Based on the optimal shape of straight fin proposed by Schmidt , the formulas of dimensionless on symmetrical one-dimensional fin shape were obtained using analytical method , the relation between heat transfer efficiency and the shape of fin was discussed for the analysis of straight fin .
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柽柳叶蝉名录及中国新记录属种记述(同翅目:叶蝉科)
A list of leafhoppers on Tamarisk with new records from China ( Homoptera : Cicadellidae )
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澳大利亚和南非一个草本和灌木属;不凋花;大多数种经常归入卷翅菊属。
Genus of herbs and shrubs of Australia and South africa : everlasting_flower ; most species usually placed in genus helipterum .
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在西方文化中,龙是一种身上长翅,口中喷火,面目狰狞的怪物,是邪恶和暴力的标志。
In Western culture , it is something terrible , a fire-puffing demon with wings , which symbolizes evil and violence .
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根据两相流微膜热虹吸的理论,设计了一种新型的板翅式冷凝蒸发器,并对它进行了性能测试。
A new type platefin condenserevaporator ( PCE ) based on the theory of microfilm thermosyphon two phase flow in the narrow channel has been developed and tested .
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另一种强化换热翅为直条状凸起,在直条状凸起的两侧边错位排列有半圆柱形凸起。
Another kind of reinforced heat exchange fins is a straight strip protrusion , and semi-cylinder protrusions are arranged at the both side edges of the straight strip protrusion in a dislocation mode .
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温度对雌蚊翅振频率的影响研究中,所设置的5个温度梯度中翅振频率的差异都显著(P<0.05),说明温度对这四种雌蚊的翅振频率有影响;
The diversity of wingbeat frequencies of female mosquitoes was evident among five temperature levels ( p < 0.05 ) . The result showed that there was effect on wingbeat frequencies of female mosquitoes .
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根据其成虫的平均寿命、黑色素的分布和翅形可分为几大类,其基本类型为三种:黑疱翅突变型、焦翅突变型和长翅突变型。
According to the imaginal life expectancy 、 melanin distributing and wing shape , the mutants can be classified into several kinds . The essential types are bbw mutant , scorched-wing mutant and long-wing mutant .
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2006年3~5月记录到雁鸭类3属8种,优势种为绿翅鸭、白眉鸭(A.querquedula)和斑嘴鸭。
While , we indicated 8 species ( 3 genera ) during March and May , Common Teal and Garganey ( A. querquedula ) were the dominant species .
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种群间种鳞长、种鳞宽、球果长宽比、种翅长和种翅宽的变异程度比种群内大,其它8个性状在种群内的变异程度比种群间大。
The variation coefficients of seed scale length , seed scale width , ratio of scale length to width , seed wing length , and seed wing width were larger among populations than in populations , while those of the other 8 characters were in adverse .