查询词典 field survey

After field geological survey and research, the Silurian Llandoverian graptolites Cf.

笔者经野外地质调查和研究，在达布达尔地区发现了近似安吉正常笔石Cf。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结，并分析了虹吸式排水系统的优势；再对虹吸式排水管道进行原型试验研究，采用不同管径不同立管高度，对系统流量、管道压强进行量测，观察了各种工况下的流态，对其水力特性进行研究分析，找出影响水力特性的落差、管径主要因素以及与排水量的关系；进一步应用计算流体力学Fluent软件，采用标准κ-ε模型与RNGκ-ε模型，计算过程应用有限体积法和二阶迎风格式对数值模型进行离散，速度和压力的耦合采用SIMPLE算法，分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析，通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究；本文首次采用结合原型试验与数值模拟相结合的方法，对虹吸式屋面雨水排水系统进行研究，试验与模拟相互验证，并进行拓展，很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题，结果正确合理，为排水管网系统设计和优化研究提供了有效的方法，对工程设计有较好的参考价值。

Published by Klaus Schmidt on Sat Jan 23, 2010 4:12 pm via: NASA – NASA's Wide-field Infrared Survey Explorer, or WISE, has spotted its first never-before-seen near-Earth asteroid, the first of hundreds it is expected to find during its mission to map the whole sky in infrared light.

新华网华盛顿8月17日电美国航天局17日发布消息称，航天局将于今年12月发射名为"广角红外测量探测器"的红外太空望远镜，以便对宇宙中发出红外辐射的天体展开观测。

VANDENBERG AIR FORCE BASE, Calif.-- NASA's Wide-field Infrared Survey Explorer, or WISE, lifted off over the Pacific Ocean this morning on its way to map the entire sky in infrared light.

加利福尼亚州范登堡空军基地报道--NASA于太平洋时间14日早些时候成功发射WISE巡天望远镜（全称：大视场红外波段巡天望远镜），它将对整个天空进行红外波段的扫描与绘制。

In order to find more effective measures of noise control and more reasonable city plan from the aspect of economic benefic and environmental impact, and a healthy living environment, we consult theelementary survey and research at the field of soundscape.

为了从经济效益、环境影响等方面寻求更有效的噪声控制手段和更合理的城市规划，并创造更健康的生活环境，本文进行了声景观方面的初步调查研究。

According to the three component absolute survey data of 118 geomagnetic stations observed during 1998~2000 and 39 geomagnetic observatories and IGRF 2000, the spherical cap harmonic models of the geomagnetic field for 2000 (the truncation order is 8), and the geomagnetic secular variation for 2000~2005 (the truncation oder is 6) are calculated.

根据1998～2000年完成的118个地磁测点和39个地磁台的三分量绝对测量资料以及IGRF2000，计算2000年中国地磁场冠谐模型（截断阶数为8），以及2000～2005年中国地磁长期变化冠谐模型（截断阶数为6）。

According to the geomagnetic 3 component absolute survey data of China for 1950～1990, and using the method of spherical cap harmonic analysis, this study calculates the spherical cap harmonic models of the geomagnetic residual field in China for 1950～1990 and draws corresponding residual maps.

根据中国1950、1960、1970、1980年和1990年地磁三分量绝对测量资料，使用球冠谐和分析方法，分别计算1950～1990年各个年代中国地磁剩余场冠谐模型。

Based on the geomagnetic survey data in the eastern and central region of China for 1936, and DGRF1935 and DGRF1940, using the method of spherical cap harmonic analysis, the spherical cap harmonic model of the Chinese geomagnetic reference field for 1936(CGRF1936) is calculated.

根据 1936年中国东部和中部地区的地磁测量资料，以及国际地磁参考场DGRF1935和DGRF194 0 ，用冠谐分析方法计算 1936年中国地磁参考场的冠谐模型。

Field geological survey and geochemistry indicate that the metamorphic ultrabasic rock in Jifeng area of the north Da Hinggan Ling Mountains is komatiite with spinifex texture.

野外地质调查和室内岩石学研究表明，大兴安岭北段吉峰林场一带变质超基性岩为具有典型鬣刺结构的科马提岩。

After a brief overview of particle physics and a survey of relativistic wave equations and Lagrangian methods,the quantum theory of scalar and spinor fields, and then of gauge fields,is developed The emphasis throughout is on functional methods,which have played a large part in modern field theory.

近来，一个新的主题正崭露头角，这第三个主题与分数化、拓扑／量子序、弦网凝聚有关，也和新的物质态以及其中显现的规范玻色子和费米子相关。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。