查询词典 fields

With the development of electrical technology, the possible health hazard of exposure to ELF fields has become an issue of considerable public concern, particularly, the association between exposure to ELF fields and the risk of cancers.

随着电力事业的发展和家用电器的日益普及，极低频电磁场的健康危害已经引起公众的广泛关注，尤其是极低频电磁场暴露与肿瘤的危险度关系。

Huangqiao carbon dioxide gas field in North Jiangsu Basin have the following characteristics: deep gas fields are associated with shallow ones, marine gas fields are coupled with continental ones, and several gas reservoirs are combined. Carbon dioxide in Huangqiao area mainly comes from deep mantle, mixed with a little thermal metamorphism and a little organic carbon dioxide in shallow formation, and helium and nitrogen gas mainly come from mantle. There is a good time\|space matching relationship between carbon dioxide gas reservoirs and great rifts, magma and volcano activity, which forms the special carbon dioxide gas reservoir mode for Huangqiao. This mode has good sealing, trapping and preserving conditions, but its gas source differs from traditional hydrocarbon gas reservoirs.

苏北盆地黄桥CO2气田具有深部气田与浅部气田、海相气田与陆相气田匹配组合互成一体、多个气藏组合分布的特点，其CO2主要以深部幔源成因为主，浅层混有部分热变质成因和少量有机成因CO2，氦气和氮气主要为幔源成因，而且，黄桥地区CO2气藏的发育与深大断裂和岩浆火山活动具有很好的时空配置关系，形成了独特的&黄桥式&CO2气成藏模式，并具备良好的储盖圈保条件。

In view of the practice of efficient development of the gas fields in east Sichuan——the largest natural gas-producing base in China at present by applying advanced techniques and scientifically managing method s, this paper summarizes and generalizes a set of development programs and managing method s for the gas fields through analyzing.

本文针对目前全国最大的天然气生产基地—川东气田，运用先进技术和科学管理手段高效开发的实践，总结并分析概括出了一套气田开发程序和管理方法。

On the basis of summarizing the status quotation of related researches at home and abroad, problems in related researches and studies are analyzed and the important research fields and contents in marsh sedimentology are chosen:Establishing different model of marsh sedimentation, to support marsh definition and classification from sedimentology; Advancing theory and quantification, to analyze formation process of marsh from quality to quantity methods; Applying modern sampling system and setting up standard sedimentation profiles; Strengthening the research of gleying marsh inland and its recent process and evidence derived from sedimentation profile; Enlarging geography fields and comparing between spatial and temporal research, and enforcing regional short timescale and highresolution environmental change; Paying much more attention on correlations between watershed environment and information derived from marsh sedimentary records and especially on their controlling mechanism.

主要从学术文献、权威机关与科研机构两个方面对相关的国内外研究现状和进展进行总结，针对国内外研究现状和存在的问题提出了今后研究的重点：建立不同成因的沼泽沉积环境模式，从沉积学角度对沼泽定义及分类提供支撑；注重理论提升与定量化，使沼泽形成过程分析从定性描述走向定量化；注重现代化采样系统的应用与标准沉积剖面的建立；加强内陆潜育沼泽研究，注重现代过程与沉积剖面证据；扩大地理覆盖面，加强时空对比，加强沼泽区域性短尺度、高分辨率环境演化研究；深化沼泽沉积信息与流域环境变迁耦合机制研究。

The fields of the Royal Plantations reached outward beyond the forest and, when the sun lifted over the far curve of land, it beamed glowing gold across grain rippling in the fields.

皇家种植园的田野延伸至森林外，当太阳在远处曲折的大地上升起时，它发出金色光泽，照耀着田野中的谷浪。

According to the property of EBB, scanning electron beam was considered as plane heat source instead of spot heat source in this paper. Aiming at the problems to measure the real-time temperature and residual stress of radiator difficultly at high temperature, the two-dimensional finite element models were established. Based on the thermal elastic-plasticity, the temperature fields and stress fields of EBB 6139T and 6204T radiator by two kinds of process were simulated by the software of ANSYS. It is of great value and significance to guide actual production.

本文根据电子束钎焊的特点，将电子束点热源转化为扫描加热时的面热源，针对散热器高温下温度实时测量和残余应力实测困难这一问题，建立了二维有限元模型，以热—弹塑性理论为基础，利用ANSYS软件对6139T和6204T散热器分别按两种电子束钎焊工艺钎焊的温度场和应力场进行了数值模拟，对于指导实际的生产具有重要的价值和意义。

The entire base is related to the sub-bases through the fields of word, phonetic notation and semantics fields, which form a hypernymy hierarchy that is quite convenient for searching.

总库和其他各库通过&词语、拼音、义项&三个栏位联系起来，构成了一个具有上下位关系的有机系统，便於资讯的提取。

The polarization curve is not sufficient for a reliable and unique validation of a PEMFC model since different parameters can lead to an identical polarization curve. A three-step validation approach is proposed for a complete and unique validation. These three steps are:(1) validated by the global polarization curve,(2) validated by the local current density distribution curve, and (3) validated by the cathode over-potential and anode over-potential versus current density curve. The results from the comparison of four flow-fields show that the PEMFC performance of the flow-fields decreases in order by interdigitated, metal foam, pin-type and parallel.

通过PEMFC参数敏感性研究发现，PEMFC性能受多种参数的影响，这些参数可分为非敏感性参数、敏感性参数和高敏感性参数；与阳极侧参数相比，PEMFC性能对阴极侧的参数更敏感；不同参数值的组合可以得到几乎完全相同的极化曲线，因此电池的极化曲线不足以用于验证数学模型的唯一性与可靠性；为验证PEMFC数学模型的唯一性与可靠性，提出了模型验证的三步法：极化曲线验证、局部电流密度验证和阳极总过电位与阴极总过电位验证。

Application fields:Gold,silver,platinum,fifanium and alloys,battery nickel band material and so on,can be welded with the equipment,and also all kinds of hot-sensitive components such as jewelry ornaments,clock-hairspring,integrated circuit leading wire,etc,It can be applied to the fields of light electronic hardware,electronic,communication,machine,automobile,military,jewelry ornaments and so on.

应用领域：该设备能焊接金、银、铂、钛机器和合金、电传捏带等材料，可用于珠宝首饰、钟表油四、集成电路引线等各种微小、热敏感零件的精密焊接，适于光电器件、电子、通讯、机械、汽车、军工、黄金首饰等行业。

The above multiple changes will produce 2 kinds ofwaves, Matter waves and mechanical wavesthat spread at the same time. Because the electromagnetic wave is amatter wave, it is the medium. Since the multiple exchanges of theelectrons state can be regarded as electrical vibration, and thevibrated electrons have magnetic fields and electrical fields at the same time, the electromagnetic wave will be produced. Then, because the electron itselfis a matter micro particle, it can producemechanical waves which can propagate outside withelectrical magnetic waves.

这种状态改变的多次往复，就会产生两种波，一种物质波，即电磁波；一种机械波，并且这种机械波是以同次产生的电磁波为媒质进行传播的，，这是因为本种状态的多次往复，可以看作是一种电子振动，振动的电子同时具有磁场和电场，所以能够产生电磁波，又因为电子本身是一个物质微粒所以他能够产生机械波，并且是横波，并随电磁波进行向外传播。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐