共查询到18条相似文献,搜索用时 0 毫秒
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Murphy G 《Science (New York, N.Y.)》1954,120(3129):1041-1042
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Earthquake aftershocks: update 总被引:1,自引:0,他引:1
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Walsh J 《Science (New York, N.Y.)》1984,225(4660):394-395
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Colin L 《Science (New York, N.Y.)》1979,205(4401):44-46
This report is an introduction to the accompanying collection of early results from the Pioneer Venus orbiter and multiprobe missions, which encountered Venus on 4 December and 9 December 1978, respectively. Initial results for the multiprobe mission and for the first 30 days of the orbiter mission were reported in the 23 February issue of Science. Additional mission features and updated mission parameters based on refined tracking data and trajectory computations are presented here. New scientific results for both missions are given in the subsequent reports which cover the first 130 days (or orbits) of the nominal 243-day orbiter mission. 相似文献
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Iannaccone PM 《Science (New York, N.Y.)》2007,317(5840):899
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Enserink M 《Science (New York, N.Y.)》2005,309(5733):370-371
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广东省烟草种质资源特异性分析 总被引:1,自引:0,他引:1
2007年对172份广东省保存的烟草种质资源进行特异性分析。试验结果表明:烟草种质资源形态特征的差异主要表现在株型、叶形等特征;主要性状差异表现在株高、茎围、节距、叶数、叶长、叶宽等性状,其变幅分别为80.60~326.20cm、5.65~12.87cm、1.03~9.46cm、11.60~59.00片、37.30~77.20cm、15.20~38.00cm,变异系数分别为13.35%、8.82%、24.30%、18.62%、9.25%、15.48%;生育期的差异主要表现在苗龄、移栽至现蕾天数、移栽至中心花开放天数和全生育期,其变幅分别介于44.0~78.0d、27.0~92.0d、35.0~115.0d、121.0~223.0d,变异系数分别为8.5%、8.0%、9.2%、6.9%。 相似文献
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本文记述了巨螯螨科膺盾螨属一新种道真膺盾螨Nothrholaspis daozhenensis sp.nov.。新种背板长1105-1165,宽712-742,背毛j6,J2,z1,z5及z6针状,肛前毛Jv1,Jv2针状,Jv3刷状,新种以其模式标本采集地命名,模式标本保存于贵州大学昆虫研究所(GUGC)。文中还报道了中国巨螯螨科3新记录种:伯氏小全盾螨Holostaspella berlesei Krantz,1967,哈氏巨螯螨Macrocheles hallidayi Walter and Krantz,1986,刻纹巨盾螨Macrholaspis punctatus Ishikawa,1967,增订了中国巨螯螨科名录。 相似文献