查询词典 field event
- 与 field event 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
This article analyses the application conditions of freezing method, current research status and the problems in this field. It points that it's necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil's nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field. It simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back-analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.
文中分析了冻结法施工的应用条件,目前对冻结法施工的研究现状和在此领域内存在的问题,指出了对深土冻结温度场进行深入研究分析的必要性;对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述;对冻结法施工的原理、过程,冻结法温度场的分布情况,影响冻结温度场分布的主要热学参数进行了综述;对深土冻土温度场模型进行了合理的简化,通过ANSYS大型有限元分析软件,建立了深土冻结温度场的模型,对不同导热系数情况下的深土冻结温度场进行了模拟;对ANSYS的模拟结果进行了定性的分析,通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值;经过对测温孔模拟温度值和实测温度值的分析,得到了冻结温度场的等效导热系数;使用等效导热系数对深土冻结温度场进行了求解,模拟了冻结壁发展情况和温度场中的温度变化曲线,用所得结果对比工程实际情况,取得了较好的效果。
-
The article discusses the basic principles of resource replacement at the beginning, that is, one resource has multi-purposes, and it can be divided as the important field, less important field and general field; the same need can be satisfied with different resources; related resources have cospecific field and independent field, and it can be divided as universal field, cospecific field, and independent field.
文章首先论述了资源替代的基本原理,即同种资源具有多种用途,可将其使用领域划分为重要领域、次要领域与一般领域;同时,同种需求可由不同的资源来满足。此外,资源的多用途性及满足同种用途资源多样化的特点,使相关资源之间在用途上存在共同的应用领域及独立应用领域,具体可将其分成资源的通用领域、共用领域和专用领域三种状况。
-
In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1~0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.
本文采用三维有限元浮动网格法仿真计算程序,对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析,对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析,在此基础上提出了推荐的施工方案;根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案;玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果,对推荐的施工方案进行了温度场和温度徐变应力仿真计算,并对比分析了两种不同骨料情况下的温度场和温度应力,结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求,且灰岩细骨料优于玄武岩细骨料;计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响,夏季蓄水方案与冬季蓄水方案相比,坝体上游变态混凝土区域最大拉应力小0.1~0.3MPa,其他部位最大拉应力无明显变化,夏季蓄水对坝体上游面混凝土的抗裂有利;根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施,对大坝的设计温控措施进行了综合评价,并提出了该工程的温控措施,对温控设计和优化施工方案具有重要参考价值。
-
Finally, the techniques of time-serial measurement for transient flow field, three-dimensiqonal tomography, computer image processing and the theories above quantitative calculation studied in the thesis are used to measure the free jet flow field of real rocket, the flow field of bore nozlle, impingment field of exhusted jet, three-dimensional flow field in hypersonic shock tunnel, the flow field of boundary layer transition, explosive and combustion flow field of detonating powder and 3-D temperature field.
最后,利用本文所研究的瞬态流场时间序列定量测试技术,三维C.T技术,计算机图像处理技术和定量计算理论等对真实火箭燃气射流场,膛口流场,燃气射流冲击场,高超音速激波风洞中的三维流场,模型边界层转捩区流场,起爆药爆轰流场和燃烧场、三维温度场等进行测试,取得了一些国际上首创性的成果,并对实现上发现的一些新现象进行理论分析和解释。
-
Faraday's law is that when the flux in the conductor loop changes, it produces electromotive force in the conductor loop, and obeys to contour integral law , Maxwell Curl Theory is that when the magnetic intensity of a certain point in ether space changes, there produces electric field at that point in ether space, which is the field mutual production theory of "electric field produces magnetic field and magnetic field produces electric field" in the free space which everybody is familiar with, and it obeys differential law , Lorentz magnetic force is that when metal electrons cut magnetic lines, metal electrons forced by move along the conductor to form inductive current, in fact, it doesn't matter whether coil moves or magnet moves, only if there exists relative motion between magnetic field and conductor, metal electrons must cut magnetic lines, which is,"coil stills while magnet moves to the left" and "magnet stills while coil moves to the right" these two situations are the same, which both belong to metal electrons having cut magnetic lines.
法拉第定律指导体环路里的磁通量发生变化时,在导体环路上产生电动势,而且服从围线积分律;麦克斯韦旋度理论指以太空间某点的磁场强度发生变化时,在以太空间的该点产生电场,即大家熟知的自由空间里"电场生磁场与磁场生电场"之互生场理论,而且服从微分律;洛伦兹磁力指金属电子切割磁力线时,金属电子受力沿着导体漂移而形成感应电流,其实,无论线圈运动或是磁铁运动,只要磁场与导体存在相对运动,则金属电子必然切割磁力线,即,"线圈静止而磁铁向左运动"与"磁铁静止而线圈向右运动"这两种情况是一样的,都属于金属电子切割了磁力线。
-
This article analyses the application conditions of freezing method, current research status and the problems in thisiold. It, points that it" s necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil" s nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field, it simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.
文中分析了冻结法施工的应用条件,目前对冻结法施工的研究现状和在此领域内存在的问题,指出了对深土冻结温度场进行深入研究分析的必要性;对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述;对冻结法施工的原理、过程,冻结法温度场的分布情况,影响冻结温度场分布的主要热学参数进行了综述;对深土冻土温度场模型进行了合理的简化,通过ANSYS大型有限元分析软件,建立了深土冻结温度场的模型,对不同导热系数情况下的深土冻结温度场进行了模拟;对ANSYS的模拟结果进行了定性的分析,通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值;经过对测温孔模拟温度值和实测温度值的分析,得到了冻结温度场的等效导热系数;使用等效导热系数对深土冻结温度场进行了求解,模拟了冻结壁发展情况和温度场中的温度变化曲线,用所得结果对比工程实际情况,取得了较好的效果。
-
The introduction of torsion field can be included in a new meaning to the concept of physical vacuum . All kinds of fields (electromagnetic field, gravitational field and torsion field) can be regarded as the behaviors of physical vacuum under different polarized conditions. If one charged particle in vacuum spins to lead to the charge polarization of the vacuum , it takes the form of electric field ; if the move source is mass, by which the spin leads vacuum to the vertical polarization, it takes the form of gravitational field; If the spin is self-spinning to lead vacuum to the horizontal polarization, it takes the form of torsion field.
挠场的引入从最基本的层次上可以纳入对物理真空这一概念的新的理解上;各种场都可以看作为物理真空在不同极化条件下的表现;如果一个带电粒子存在于真空,作为一种挠动,使物理真空被电荷极化,就表现为电场;如果这种挠动源是质量,物理真空在质量的挠动下引起真空的自旋纵向极化,就表现为引力场;如果这种挠动是由于物体的自旋引起的,那么,真空被横向极化,就表现为挠场。
-
In view of geological records preserved from different regions of the world are not identical, it's suggested that, when correlating the Ordovician-Silurian boundary, at the global boundary stratotype section, the FAD of N. persculptus be selected as the biomark, the transgression event identical to the FAD of N. persculptus as the auxiliary physical mark and the mass extinction and chemical anomaly events respectively as the auxiliary biomark and chemomark. In some regions with few graptolite, the Ordovician-Silurian boundary should be indicated by the auxiliary marks, such as the transgression event, mass extinction or chemical anomaly event, with the other fossil such as conodont nearest to other geological events as the provincial biomark for correlation. In other regions with much stratigraphic hiatus originated from the regression, the Ordovician-Silurian boundary should be marked by the regression-transgression event nearly relevant to the N. persculptus Zone.
鉴于不同地区留下的地质记录不完全相同,奥陶/志留系界线对比方法不同:在界线层型剖面上,以N.persculptus的首现为生物标志,以与之基本一致的海侵事件为辅助的物理标志,以生物集群绝灭事件和化学异常事件为辅助的生物和化学标志;在笔石极不发育的地区,则以海侵事件、生物绝灭事件或化学异常事件为辅助标志,以与其相距最近、并且具有区域对比性的其它门类化石作为界线对比的生物标志;对于由于海退事件所造成地层缺失很多的地区,则以海退/海侵事件作为划分界线的物理标志,并以相映的海侵事件的开始作为奥陶/志留系的分界。
-
The two selection restrictions are determined by the cognitive function of middle construction. Though middles do not report actual event, they depict the properties of virtual events, therefore, naturally verbs in middles should be event verbs. And middles are cognitively motivated to deemphasize the role of agent in the occurrence of the event and focus the active role a passive participant could play in the occurrence of the event, then a volitional adjective or adverb that is under the control of agent would bring the deemphasized participant back into focus again, which is obviously contradictory to the cognitive motivation of middles.
这两种选择限制是由中动结构的认知功能决定的,中动结构虽然并不报道具体事件,但它描述虚拟事件的特性,因此动词必须是事件动词;同时中动结构之意图是弱化施事的作用而强化被动参与者在事件中的积极作用,因而一个语义上由施事自主控制的形容词或副词必然又会突显施事的作用,这与中动结构的认知动因是相矛盾的。
-
By comparing and analyzing the solar and interplanetary data of two typical fast halo Coronal Mass Ejections, we have found that the event far away from Coronal Holes caused a great Solar Energetic Particle event, but the event very close to CHs did not cause a major SEP event.
通过对比两次快速晕状日冕物质抛射事件,分析相应的日面和行星际的观测资料,发现源区距离冕洞较远的CME引起了极强的太阳高能粒子(Solar Energetic Particle,SEP)事件,而源区非常靠近冕洞的CME则没有引起大的SEP事件。
- 相关中文对照歌词
- The Main Event
- Field Of Love
- Karl Lagerfield
- Love Field
- We Do It In A Field
- Lovers' Field
- Da' Durty
- Ivory Tower
- Extinction Level Event
- Event Horizon
- 推荐网络例句
-
The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.
论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。
-
I have not really liked him,I do not like his this kind of disposition.
我没有真的喜欢他,我不喜欢他的这种性格。
-
As we know the price of traditional product is composed of the cost and the profit of the company involving market competition, monopolizes and many other factors.
我们知道作为传统的商品,定价的模式往往是在成本的基础上增加厂商的预计利润而形成其价格,当然也要考虑到市场竞争、垄断等其他方面的因素。