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The U-Pb and Pb-Pb isotopic dating of zircons provided the ages of 447-462Ma representing the ages of peak granulitic metamorphism. The U-Pb dating of detrital zircons from aluminum-rich gneisses yielded older upper intercept ages which reflect the times of older materials derived from sourse rocks of the gneiss protoliths.

岩石中变质锆石的U-Pb及Pb-Pb同位素测定获得447-462Ma的年龄值,代表其麻粒岩相的变质作用时代,富铝片麻岩中含继承组分的锆石还获得较老的上交点年龄,它可能代表其沉积岩原岩源区的年龄。

Chemical analyses of ores sampled from different elevation at the representative Zoujiashan uranium deposit indicate that Fe〓O〓, FeO, MgO and P〓O〓 increase evidently with depth which is related to alteration of haematite, chlorite and apatite, Na〓O and Na〓O+ K〓O also increase with depth, reaching a maximum of Na〓O at 911 meters below the surface, which suggests alkaline alteration increases downwards. At depth of 90 meters below sea level, where the boundary of the two cycles of the volcanic rocks is located, CaO reaches the maximum, representing maximum of alteration of fluorite.

对典型矿床不同富集标高矿体的化学全分析结果表明:随深度增加,Fe〓O〓、FeO、MgO及P〓O〓的含量有明显增高的趋势,这与赤铁矿化、绿泥石化及磷灰石化有关;-90m标高的CaO含量最高,达17.67%,反映这一部位的萤石化最发育;Na〓O及Na〓O+K〓O的含量由浅入深也存在明显的增高趋势,且Na〓O的含量在911m深处为最高,这充分显示碱交代作用从上到下有增强的趋势,而钠长石化在911m处最强烈。

The rbcL gene sequences of six species representing five subfamilies of the Hamamelidaceae and the Platanaceae were determined and used in the phylogenetic analysis on the "lower" Hamamelidae sensu Endress (1989) and its allies newly suggested.

测定了悬铃木科和金缕梅科5个亚科的6个代表种的rbcL基因序列,对低等金缕梅类植物及新近提出的相关类群进行了分子系统发育分析,获得4个最简约树。简约树步长为893,其CI值和RI值分别为0.558和0.591。

The newly collected DNA sequence data were analyzed with data collected in the previous studies involving species representing all the above families but the African Myrothamnaceae to address the phylogenetic questions of the"lower"Hamamelidae and the core family Hamamelidaceae.

主要结论包括:传统低等金缕梅类是一个复系类群;金缕梅科也是一个复系类群;ITS序列分析支持将连香树科包含在金缕梅科内,但是,rbcL资料和matK资料不支持将连香树科包含在金缕梅科内。

Pollen material from dried specimens was obtained from the followng herbaria: ANU, ANUB, N, NAS. Pollen of 111 species representing 12 genera was examined in the light microscope and with the scanning electron microscope.

利用光学显微镜和扫描电镜对蓼科12 属111 种的花粉进行了观察和研究,划分出28 个花粉类型,对每个类型做了精确的描述和评价;提供了每个花粉类型的重要鉴别特征。

To 230 A.D. Directly in front of the entrance to the mausoleum was a stately, cloaked figure, probably representing Herma's father or grandfather.

在陵墓入口的正前方是一个形象庄严、披着斗篷的人物形象,它很可能代表了赫尔马的父亲或者祖父。

And in the other corner, in the bright yellow outfit and representing Malaysia, please welcome Heteropoda davidbowie,"the Spider from Mars."

另外一边是全身鲜黄象征马来西亚的异足蛛属的戴维·鲍依&火星蜘蛛&。

Exotic germplasms have been playing an important role in corn breeding and production in our country. But to make good use of them, their genetic characteristics and germplasm relationship with Chinese inbred lines representing different heterotic groups should be studied.

引进国外种质对提高我国玉米育种和生产水平具有重要作用,但要充分发挥其作用,必须系统研究其种质特点及其与我国不同优势类群自交系的遗传关系。

But to make good use of them, their genetic characteristics and germplasm relationship with Chinese inbred lines representing different heterotic groups should be studied.

本研究采用传统的配合力和杂种优势分析与现代的SSR分子标记技术相结合的方法,探讨引进南斯拉夫玉米自交系与我国不同优势类群骨干自交系的配合力、杂种优势、遗传距离和杂合性,为引进自交系的高效合理利用提供理论依据;并通过各项遗传指标与F1产量的相关分析,探讨各项指标预测杂种优势的可行性和效果。

In this study, through the traditional methods, analysis of combining ability and heterosis, and modern SSR marker technique, the combining ability, heterosis, genetic distance and heterozygosity between introduced Yugoslavia inbreds and important lines representing different heterotic groups in our country were studied, which will greatly influence to make full use of those indroduced lines.

本研究采用传统的配合力和杂种优势分析与现代的SSR分子标记技术相结合的方法,探讨引进南斯拉夫玉米自交系与我国不同优势类群骨干自交系的配合力、杂种优势、遗传距离和杂合性,为引进自交系的高效合理利用提供理论依据;并通过各项遗传指标与F1产量的相关分析,探讨各项指标预测杂种优势的可行性和效果。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。