分布族
- 与 分布族 相关的网络例句 [注:此内容来源于网络,仅供参考]
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(1) The difference between alcohol dependence and control group at 5-HT1B receptor gene G861C was not significant in Jinuo population of Yunnan province.
(1)5-HT1B受体基因G861C多态分布在云南省基诺族酒依赖人群和正常对照中无差异性,5-HT1B受体基因G861C多态性与基诺族酒依赖的发生无相关性。
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If there exist a family of copulas, we could construct any bivariate or multivariate distribution functions of given margins by Sklars theorem and these distributions are always very useful for simulation.
如果我们有一族copula,那么根据Sklar定理,可以构造出任何指定边缘分布的二元或多元联合分布函数,而这些分布函数在建模与模拟方面是非常有用的。
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The hereditary scholar class played a very vital role in our country culture inheritance. On the Wu zetian time,more poor scholars who embarked on an official career through the imperial examination had entrusted with heavy responsibility.
从地域分布上来看,寒士比较集中的地方既是经济发达地区,又是原来旧士族聚居的地方,士族在我国文化传承中起到了很重要的作用。
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And the evaluation effects of China's Stock Market's volatility by different ARCH models from different point of view are compared. In addition, by using two mixed distribution models, the leptokurtosis and fat-tail of stock return are examined. Based on the above analysis, an improved Laplace distribution model is proposed. Furthermore, the root generating non-Gaussian return distribution of the stock market ? is expounded from the perspective of both economy and capital market.
首先分别从分布和波动性模型出发,研究中国股票市场收益分布特征与波动性特征:从ARCH族模型出发,考察了中国股票市场波动性的异方差、集群性、杠杆效应以及长记忆性特征;从两个混合分布模型出发,结合随机模拟考察了收益分布的尖峰、厚尾和偏态特征,并提出了改进型LapJace分布。
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In the dissertation, we do a further study in value distribution theorem and normal families theorem of meromorphic function and get some results by using the Nevanlinna's value distribution and the Ahlfors value distribution.
中文摘要:本论文主要运用Nevanlinna值分布理论以及Ahlfors值分布理论在亚纯函数值分布理论和亚纯函数正规族理论两个领域内做了进一步研究,并且相应的得到了几个结果。
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There are difference of MspI polymorphism among Puyumar, Philippines, Paunch and min-nan.
在此基因型分布上卑南族、菲律宾人、阿美族分别与闽南人有差异。
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The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.
采用过渡金属交换的分子筛作为催化剂,进行催化热裂解制取乙烯的反应,研究发现,在β沸石分子筛和ZSM-5分子筛中引入过渡金属后,催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化,说明过渡金属的加入对于催化热裂解反应的机理具有影响,Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性,产物中氢气、焦炭的产率很高,Ti、Cr则未表现出氧化作用:分子筛及催化剂中引入银后,催化热裂解反应的转化率和乙烯的产率有了提高,丙烯产率没有很大的变化,说明银在催化热裂解反应中能够促进正碳离子的生成,又有可能通过氧化-还原作用部分改变反应机理,促进了自由基的生成,并且由于银对烯烃的吸附很弱,其氢转移反应和脱氢、加氢活性比较低,有利于烯烃产率的提高。
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We organized and identified the specimens which collected in the insects specimens laboratory of life science and technology department of Xinjiang university, from almost everywhere of Xinjiang with combination of the conventional methods and the electroscopic scanning technique.
本文采用常规鉴定方法与雄性外生殖器解剖相结合,辅以扫描电镜观察,对收藏于新疆大学生命科学与技术学院昆虫室20年来积累的标本及三年在校期间系统地采集于全疆各地的拟步甲类标本进行了整理与鉴定,结合野外考察及重要类群的生物学研究,研究其区系成份,并对其区系特征及地理分布状况进行了系统的分析,主要研究成果如下:1)初步查明新疆拟步甲科昆虫共计266种,分隶于23族72属,其中35种为中国新记录种,3种为拟步甲类新种,作新种记述,并附图片;在研究过程中初步探讨了拟步甲的中文命名问题; 2)新疆拟步甲种类繁多,其区系成分分析显示,除12种为广布种以外,共有6种区系成分,其中中亚细亚种为最多,有87种,占已种的32.7﹪;其次依次为中央亚细亚种和特有种,分别为81种和65种,各占已知种类的30.5﹪和24.4﹪;泛古北种12种,占4.5﹪;欧洲西伯利亚种7种,占2.6﹪;欧洲中亚种最少,仅有2种,占0.75﹪,并根据新疆拟步甲科昆虫区系成分分析了其起源问题; 3)新疆拟步甲科昆虫的地理分布表明,分布于准噶尔盆地的种类最为丰富,计161种,占新疆已知种的60.5﹪;其次是塔里木盆地92种,占已知种的34.6﹪;东疆诸盆地63种,占23.7﹪;伊犁谷地56种,占21.1﹪;在三大山系中,天山山系的拟步甲种类最多,为54种,占20.3﹪;阿尔泰山山系28种,占10.5﹪;昆仑山山系13种,占4.9﹪。
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The distribution database and the geographic cladograms of the superfamily was set up. The distribution pattern of the superfamily was concluded and the origination centre of the superfamily was also discussed. We deduced that the South Asia is probably the origination centre of the superfamily. Two new index for zoogeographic analysis, index of high taxa distribution and the possibility index of the origination of a high taxa, were proposed.
应用Diva 软件研究了叶蜂总科族级支序生物地理,建立了地理分布数据库和地理支序图,拟合了叶蜂总科现代分布格局,推断出叶蜂总科的起源中心位于东亚南部,提出了两个新的地理分析指数—类元分布指数It和类群起源可能性指数Io。
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Daur, mainly distributed in Inner Mongolia Autonomous Region in Morin Dawa WO Fall Family zizhiqi, Ewenki Autonomous Banner, butha flag, Arun Qi, and Heilongjiang Province, Qiqihar city, Meris area, Fulaerji areas (mainly living in the Han Bo Dai Village, Ben Village, full and Taiwan Village, Zhonghaiyayuan ton), Longjiang County, Fuyu County, Nenjiang County, love Huixian; minorities living in Xinjiang Tacheng County.
达斡尔族,主要分布在内蒙古自治区莫力达瓦斡尔族自治旗、鄂温克族自治旗、布特哈旗、阿荣旗及黑龙江省齐齐哈尔市区、梅里斯区、富拉尔基区(主要居住在罕伯岱村、洪河村、全和台村、海雅屯)、龙江县、富有县、嫩江县、爱辉县;少数居住在新疆塔城县。
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。