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   the plate 在 自然地理学和测绘学 分类中 的翻译结果: 查询用时:0.643秒
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the plate
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  板块
    Then the plate motion model GVM1 with respect to the unifying data of GPS and VLBI is established, and also present the absolute and relative euler vector of 12 plates and more than 20 conjugated plates with their error ellipse, comparison with the geological plate motion model NUVEL-1A indicates that the plate motions from space geodetic observations are generally consistent with those from geological observations in recent 3 million years.
    然后基于空间大地测量的观测量——GPS和VLBI的组合数据建立了现时板块运动模型GVM1,给出了12个大板块的绝对运动欧拉矢量及20多个板块对的相对欧拉矢量及其误差椭圆,并与地学模型NUVEL-1A进行了比较。
短句来源
    Comparison of SGPMM1 with the geological plate model NUVEL-1 indicates that the plate motions from space geodetic observations are generally consistent with those from geological obsevations.
    SGPMM1与地学板块运动模型NUVEL-1的比较指出:空间大地测量数据估计的板块运动总体上与地学估计值一致。
短句来源
    The coincidence of this model with the plate real motion status is obviously better than that of the rigid motion model.
    根据太平洋板块(PCFC)上空间大地测量的观测结果,建立了PCFC的弹性运动模型,该模型与板块实际运动状态的符合程度明显地优于刚体运动模型.
短句来源
    In the southeastern region of the plate, there exists a coincident east-trending deformation with the rates of 1.5~1.8 mm/a and 2.8~9.1 mm/a in the NE and SE directions, respectively.
    在板块的东南区存在一致的向东形变,北东与南东方向的形变速率分别为1.5~1.8mm/a与2.8~9.1mm/a.
短句来源
    RELATION BETWEEN THE SECULAR VARIATION OF LONGITUDE AND THE PLATE MOTION
    经度的长期变化与板块运动
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  “the plate”译为未确定词的双语例句
    The Techniques for Developing the Land Resource Information System ——Based on the Plate of ArcGIS Geography Information System
    土地资源信息系统(LRIS)开发实现的技术研究——基于ArcGIS地理信息系统平台
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    The results show that the Jiangzj(Himalayas)and Lasa Blocks under the horizontal compresion from northern and southern sides are shortening at a rate of 12mm/a,that is much less than the plate moving rate of 50~60mm/a reported by Molner.
    结果表明:江孜(喜马拉雅)块体在喜马拉雅南侧和雅鲁藏布江北侧的水平挤压下,以12mm/a缩短,这与Molner等所给出的50~60mm/a相比要小得多;
短句来源
    Jointly Inversing the Plate Driving Forces on the Boundaries Around Sichuan-Yunnan Area Using GPS Measurements of the Crustal Movement Observation Network of China and the Principal Stress Orientation Data of China Area
    利用GPS位移和主应力方向观测资料进行川滇地区边界力的联合反演研究
短句来源
    The new assume of GPS/VLBI/SLR/InSAR combination technology are brought forward, its application to studying the plate motion and its changes of cubage and figure of the earth are discussed, and three different mathematics models of crust deformation are founded according to their characteristics of crust deformation. The application to the geostationary satellite positioning system with two satellites are analyzed in this paper.
    提出了GPS/VLBI/SLR/InSAR组合应用的新设想,探讨了其在现代地壳运动和地球体积、形状变化中的应用可能,并针对地壳不同形变特征给出了三种不同的数学模型。
短句来源
    (7)The height calibration and the plate calibration experiments are done. The precisions of the system calibrations are acquired.
    (7)在系统样机上进行了高度z标定和位置(x,y)标定的实验,通过分析实验结果给出系统的标定精度。
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  the plate
Controls depend only on time, and their distribution on the plate surface is fixed.
      
Nonstationarity of streamlining is taken into consideration by introducing integral terms into moments of aerodynamic forces affecting the plate.
      
The current-voltage characteristic of the plate is found.
      
New thin layer chromatography technique using a gas stream above the plate sorption layer
      
The main difficulties are associated with the nonlinear dependence of the aerodynamic characteristics on the plate thickness.
      
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The mode of genesis of plate-like structure of soils under different conditions may be different.Broad field observation reveals that soils favoring plate-like structure formation generally have an easy access to an abundant but intermittant supply of water,low content of raw organic matter as well as of humus,indefiniteness but not being too sandy in tex- ture,and weakness in structural stability. The present paper reports the evidences gathered from the field obser, vation and laboratory experiments...

The mode of genesis of plate-like structure of soils under different conditions may be different.Broad field observation reveals that soils favoring plate-like structure formation generally have an easy access to an abundant but intermittant supply of water,low content of raw organic matter as well as of humus,indefiniteness but not being too sandy in tex- ture,and weakness in structural stability. The present paper reports the evidences gathered from the field obser, vation and laboratory experiments showing that plate-like structure can be developed through the effect of alternate wetting and drying processes. Laboratory experiments have shown that the degree of perfection of the development of plate-like structure as evidenced both from the horizontal natural crackings and from the volume of swelling of the soil body in- creases with increase in the number of cycles of alternate wetting and drying.(Plate Ⅰ.)In order to assure the effectiveness of the processes, both drying and wetting should be carried out as thorough as possible. A mechanism explaining the formation of plate-like structure is pro- posed.According to the suggested mechanism,swelling of the soil as a result of wetting affords the necessary conditions for the formations of plate-like structure,while the actual development of structural plates is accomplished through the drying processes.The greater the rate of drying, the better the conditions for the development of plate-like structure. The horizontal axis of the structural plates as demonstrated by the laboratory experiments runs parallelly to the contour of the drying sur- face.The development of plate-Iike structure is greatly hindered by exerting pressure on the surface upon wetting.Microscopic examination of the structural units reveals that no definite orientation of the individual soil particles are noticeable and the horizontal crackings separating layers of structural plates were seen to be discontinuous and of non-uniform in dimension. The following is a brief account of the mechanism of plate-like struc- ture formation through the effect of alternate wetting and drying processes: The evaporation of water from the saturated soil leads first of all to the formation of a thin crust on the very surface of evaporation.This leaves,beneath the crust a series of cracking spaces parallel to the surface due to the shrinkage of the soil while drying.Further drying compels water to evaporate from below the surface into these cracking spaces. Thus a second layer of laminated dry soil may form below the first layer of the surface crust.As evaporation continues on,the process repeats itself with decreasing intensities because part of water will be lost inevitably through the few connections that may exist between adjacent layers of structural plates.The layers developed below the surface crust are of course somewhat different in nature because the conditions of drying pre- vailing here are different.Thus the drying out of the soil below the surface usually proceeds in a much more restricted rate——a fact,that may explain the presence of structural plates in the underlying layers which are absent in the surface crust.On rewetting the soil,the particles or aggregates in cracking spaces then may serve as wedges to push layers of structural plates further apart as a result of swelling. This theory may afford explanations to the facts that in the laboratory experiments better development of plate-like structure is always accom- panied by the greater extent of swelling of the soil and the latter in turn can be augmented by increasing the number of cycles of alternate wetting and drying processes.The proposed mechanism also suggests that not only should both wetting and drying be thorough enough so as to assure the formation of as many horizontal crackings and structural plates as possible, but also the rate of drying should be great enough to check as much as possible the lose of water through capillary action.It is also evident ac- cording to the supposition given above that any factor inhibiting the swelling of the soil,(such as pressure exerted upon the surface)will make it impossible to develope plate-like structure through alternate wetting and drying processes.As further evidences to support the suggested mechanism, it is worth while to point out the facts that plate-like structure usually occurs near the soil surface and that structural plates run always parallelly to the surface of evaporation. The soils that are most liable to the formation of plate-like structure according to this mechanism are those medium in texture,and low in organic matter and colloid contents. The plate-like structure thus developed is believed to be temporary in the sense that it will be easily disintegrated by either mechanical forces as practiced in the usual cultivation processes or by prolonged flooding followed by imcomplete drying.

一、片状结构形成的原因很多,但在地表常见的一种可能不是沉积、水冻或压力等原因造成,而系常经干湿变异的结果。二、在干湿变异条件下产生的片状结构分布地区甚广,可能其形成与土壤种类无直接关系。凡地面少植被、原缺乏结构的土壤,如不受人为翻动,露于地面一定时期后,多半会产生不同明显程度的片状结构。三、土壤在干湿变异条件下产生片状结构可能为一简单的机械作用。即土块湿润时膨胀,体积变大,再经干燥,体积不能恢复,留下横向裂隙于土中,遂成片状结构。在所研究的各因子中,干湿变异次数多、干湿变异程度大以及干湿变异中脱水速率快均能促使土块膨胀,所以能使片状结构形成更为明显。如对土块施以压力,不予膨胀,虽土块具有各方面生成片状结构的良好条件,仍不能形成片状结构。对田间具片状结构土块的试验中,说明它可能与室内人工片状结构有相同的成因,一方面也说明了这种结构的不稳定,易于破坏,但如条件适合,形成也不困难。四、此种片状结构因系土块干燥时产生横向裂隙所形成,所以结构横轴生成的方向主要决定于水分的蒸发面而经常与之平行。这种关系在野外具体表现为结构横轴常与地表平行,在室内的几项试验结果与此也相符合。此外结构横轴形成的方向是否与土块湿润时水分进行的...

一、片状结构形成的原因很多,但在地表常见的一种可能不是沉积、水冻或压力等原因造成,而系常经干湿变异的结果。二、在干湿变异条件下产生的片状结构分布地区甚广,可能其形成与土壤种类无直接关系。凡地面少植被、原缺乏结构的土壤,如不受人为翻动,露于地面一定时期后,多半会产生不同明显程度的片状结构。三、土壤在干湿变异条件下产生片状结构可能为一简单的机械作用。即土块湿润时膨胀,体积变大,再经干燥,体积不能恢复,留下横向裂隙于土中,遂成片状结构。在所研究的各因子中,干湿变异次数多、干湿变异程度大以及干湿变异中脱水速率快均能促使土块膨胀,所以能使片状结构形成更为明显。如对土块施以压力,不予膨胀,虽土块具有各方面生成片状结构的良好条件,仍不能形成片状结构。对田间具片状结构土块的试验中,说明它可能与室内人工片状结构有相同的成因,一方面也说明了这种结构的不稳定,易于破坏,但如条件适合,形成也不困难。四、此种片状结构因系土块干燥时产生横向裂隙所形成,所以结构横轴生成的方向主要决定于水分的蒸发面而经常与之平行。这种关系在野外具体表现为结构横轴常与地表平行,在室内的几项试验结果与此也相符合。此外结构横轴形成的方向是否与土块湿润时水分进行的方向有关,还待进一步的研究解决。五、通常所见的片状结构每每愈至土壤深处愈不明显,推测其原因可能是下层土壤具有以下特性:①干湿变异程度小,②干燥时脱水速率慢,③受到上部土层的压力,湿时不易膨胀,是几方面生成上的不利条件综合影响下的结果。六、片状结构容易在冲积母质的土壤上、滨海盐土地带以及碱土地区等处表土上发现,这可能与:地势平坦,水分易于停积;植被稀疏;土壤缺乏结构;或下层坚实,水分常积于上部,使表土能充分湿润等因子有关。在灰化土及生草灰化土地区,A_2 层中的片状结构结构是否具有上述同样的成因,还不能肯定,但有些条件很值得注意,如 A_2层缺乏有机质,没有良好结构;下面有一坚实的B 层,水分易在此停积;一般 A_2层距地表不远;同时在质地方面含粉砂较多,说明其片状结构也可能是干湿变异的结果。七、质地在片状结构的形成上也可能是影响较大的因子之一,工作中初步的印象是含粉砂或细砂较多的土壤易于形成,土块内粘结力过强时不易形成,但迄无充分证据,还有待进一步的研究。

Owing to the increasing use of laser alignment technique in engineering surveying, the problems of how to utilize it properly and to improve its precision have been rais- ed. Further study of laser alignment is necessary. This paper deals with three major problems: the circular zone plate, the atmosphe- ric effect and the detection of laser beam. Having derived the formulae to compute the intensity of the image formed by a circular zone plate, the author has come to the preliminary conclusion that...

Owing to the increasing use of laser alignment technique in engineering surveying, the problems of how to utilize it properly and to improve its precision have been rais- ed. Further study of laser alignment is necessary. This paper deals with three major problems: the circular zone plate, the atmosphe- ric effect and the detection of laser beam. Having derived the formulae to compute the intensity of the image formed by a circular zone plate, the author has come to the preliminary conclusion that a circular zone plate with 5-7 clear zones and opaque central zone is considered most suitable in practice and by properly designing zone plate, the number of the plates used on an aligned line can be minimized. Then atmos- pheric refraction and air turbulence causing random deflections are discussed in the pa- per, for they impose restrictions on alignment accuracy. The effect of atmospheric refraction is mathematically analyzed, some measures to reduce the effect are introduced and the design of the detector is discussed.

精密激光准直在工程测量工作中应用日益广泛。为了合理地、有效地应用这个方法,提高其准直精度,需要对它作进一步的研究和分析。本文推导了圆形波带板的成象公式,分析了它的成象规律,得出如何合理地设计波带板的初步看法。同时,文章也对大气折光影响做了较为详细的分析,提出了减弱其影响的措施以及改善探测器设计的方案。

The PZT in Tianjin Latitude Station of Beijing Observatory started to operate in Feb. 1979. Due to adopting the vacuum system in the telescope, the systematic deviation, induced by the change of a small angle of the sealing window, a parallel plate made with cervit, with the temperature of the environment, is produced in the observations of UT and (p. This deviation is called Plate Deviation(PD). For studying and removing PD, using the method of rotating the plate in 180?the observations are carried alternately...

The PZT in Tianjin Latitude Station of Beijing Observatory started to operate in Feb. 1979. Due to adopting the vacuum system in the telescope, the systematic deviation, induced by the change of a small angle of the sealing window, a parallel plate made with cervit, with the temperature of the environment, is produced in the observations of UT and (p. This deviation is called Plate Deviation(PD). For studying and removing PD, using the method of rotating the plate in 180?the observations are carried alternately at two positions, i. e. the position I differs from position II in 180.

为参加国际MERIT计划及我国综合世界时和极移服务系统,利用天津PZT在1982年全年观测结果,确定它的平板差改正为:其中T0为观测历元的室温。

 
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