查询词典 developable surface

Therelationship between the turbulent kinetic energy and its dissipation rate,whichis widely used to parameterize the dissipation rate in turbulence closure models,is found to hold well for both reversing and rotating flows,but with differentcoefficients.Microstructure profiling measurements at two comparative stations (a deepercentral basin and a local shelf break) in the stratified Yellow Sea are analyzed,with emphasis on tidal and internal-wave induced turbulence near the bottomand in the pyenocline.The water column has a distinct three-layer thermohaline structure,consisting of weakly stratified surface and bottom boundary layers anda narrow sharp pycnocline.Turbulence in the surface layer is controlled by thediurnal cycle of buoyancy flux and wind forcing at the sea surface.while thebottom stress induced by barotropic tidal eurrents dominates turbulence in thebottom boundary layer.The maximum level at which the tidally enhanced mixingcan affect generally depends on the magnitude of the tidal current,and it canbe up to 10-15 m in the Yellow Sea.This suggests that,in the deeper regionsof the shelf seas,turbulent dissipation and mixing are very weak at the levelsbetween the near-bottom tidally enhanced layer and the pycnocline.Therefore,these levels provide a significant bottle neck for the vertical exchanges.In theshallow regions,however,the tidally-induced turbulence can occupy the wholewater colum below the pycnocline.A quarter-diurnal periodicities of the turbulentdissipation rate and eddy diffusivity are found at different heights with evidenttime lag.In the relatively flat central basin,the pycnocline is essentially non-turbulent and internal-wave activity is very weak.Therefore,vertical fluxes acrossthe pycnocline decreased to molecular levels.In contrast,internal waves of variousperiods can be always found near the local shelf break.

对强层化季节黄海两对比性站位(分别位于中央海盆区与局地陆坡区)处层化、内波以及湍流混合特征的研究结果表明：1、强层化季节的陆架海水体一般呈现显著的三层热盐结构，在水体近乎混合均匀的上混合层与潮流底边界层之间为强跃层；2、近表层水体的湍流混合强度主要由海表浮力通量的日变化与海表风强迫控制，而在潮流底边界层内，潮混合是水体热量、物质、动量与能量垂直交换的主要机制；3、潮混合影响的深度由潮流大小决定，在黄海，一般可达10-15 m，因此，在水深较深的区域，在跃层与潮混合所至深度范围的上界之间存在湍流混合非常弱的区域，这显著抑制水体内物质的垂直通量，为物质垂直交换的瓶颈，而在水深较浅的区域，潮混合影响范围可至跃层底部，因此物质在跃层以下整个水体中混合非常均匀，当跃层内间歇性强混合发生时，可以产生显著的跨跃层物质输运；4、近底潮致强湍流耗散缓慢地向上传播，底上不同深度处垂直湍扩散系数也具有显著的位相差异，且二者均随时间呈现四分之一周日周期的变化；5、在地形较为平坦的中央海盆区，内波活动非常微弱，因此跃层内湍流混合非常弱，垂直扩散系数为分子扩散水平，跨跃层物质通量受到显著抑制，而在地形变化较为显著的局地陆坡区，内波活动非常活跃，除内潮的影响外，高频内波与内孤立波的影响也很显著，因此跃层内存在很强的间歇性强混合，内孤立波存在的区域，水体湍流混合显著增强。

Because change of volume reflected eroding process of watershed and surface change reflected change of topography surface, this model described relationship between watershed topograph and erosion.iv As a quantitative index of wateshed topography, topograph fractal demension can represent surface shape information of watershed topography in the round. Reseach find that watershed model and actual watershed show good fractal character. Topography fractal dimension related with process of development of watershed physiognomy and represented degree of watershed development, v Sediment yield intensity of watershed model reflected erosion characteristic of watershed model in different development phase.

流域模型产沙强度的变化反映了流域模型在不同发育阶段的侵蚀特征，模拟试验研究结果表明：在整个流域模型地貌地貌的发育过程中，其产沙强度呈现由小到大，然后又逐渐减小的总体趋势，流域模型单位降雨产沙率及平均输沙率与地形分维数表现为Gaussian模型关系，其关系形式与结论3中相对体积和表面积之间关系相似，进一步说明了以地形分维数表达地形变化的合理性。

Based on a computing model of floor heating residences, indoor thermal environment and heat distribution under the effect of heat charge/discharge, operation control and solar radiation has been concluded. Concept and formula of equivalent heat supply has been put forward which indicate that actual heat supply will be equal to the sum of design heat supply and equivalent heat supply. Recommend coefficient has been given taken Dalian as an example. Computed according to the new method, design heat supply can be reduced to 37% in cloudy day and 43.3% in sunny day, energy saving effect is very obvious. In Tromb wall solar house, effect of concrete wall on indoor temperature swing and attenuation of temperature wave is very obvious. While the outdoor air-temperature swing exceeds 10℃, indoor air-temperature swing belows 3℃. In the experiment, maximal difference in temperature between inner surface and outer surface of the 300mm wall exceeded 10℃. Heat storage and collector efficiency varies adversely according to solar radiation. Factors such as thickness, material, absorptance of the wall and permeation of the glass cover all have big influence on heat storage and collector efficiency. There exsisted an optimal thickness of the wall, which can make the best of heat storage and collector efficiency. Most of the heat stored in conventional Trombe wall during the daytime has been lost to the outside at night without heat preservation. Heat preservation on the outside surface of the wall has effectively improved heat release performance of the wall at night, heat supply to the room has increased too.

通过建立的地板采暖系统动态热性能分析模型，得出了在蓄放热特性、运行方式和太阳辐射等因素耦合作用下的室内热环境及热量分配比例，提出了等效供热量的概念及计算公式，指出实际所需供热量应等于设计供热量加上等效供热量，并以大连为例，给出了等效供热量的修正系数，以新方法计算，阴天可减少设计供热量37％，晴天最大可以减少设计供热量43.3％，节能效果显著；集热蓄热墙式太阳房中，混凝土蓄热墙的室温均一化效果和对温度波的削减作用非常明显，当室外温度波动最大幅度超过10℃时，室温波幅不超过3℃，实验中300mm厚墙体内外表面温差超过10℃；墙体蓄热效率与集热效率随太阳辐射照度的变化呈相反的变化趋势；墙体厚度、材料、表面吸收率以及盖板透过率等因素对集热和蓄热效率均有较大的影响，存在一个最佳的墙体厚度值，使得墙体集热和蓄热综合性能最优；传统的蓄热墙夜间没有外保温，辐射散热损失很大，研究表明墙体外保温方式明显改善了蓄热墙夜间的散热性能，增加了向室内的供热量。

Because quibau thick version 5.1, the back surface friction phase after sticking, la version force focused on the stamp pane at the ends, and the entire block is not fully apply it to the roller, the cnditions stress unevenly, in addition to the break-up of unaccumulate gamta, measurementunder, in the business card printing and membership card design is represented as a rigid body, there is almost no extrusion surface dimensions, it remained stable; and for thin base, together with the pad of paper plates attached to the roller for some examples of the frictional force of isolation, etc, in the role of uponsize in each of the cnditions of a uniform stress distribution, printing better apply it to the surface, it is large, measurementunder overprinter error.

因为厚版基包在滚筒上后，其背后与滚筒暗不天相贴后摩擦力较不小，不推版力只集洋在版口处的两头，分座印版不是分座贴在滚筒上，各质点答力分拨不平均，不兴宏不小的板滞倾圯边，不推伸变形较小，在制卡和会员卡制作历程洋表示为刚体，实在不有有挤压变形，不陈其暗不天尺寸根基保留安定；而差于薄版基，加衬垫纸的印版装在滚筒上后因衬纸的分隔，相答摩擦力变小，在不推力的功用下每个质点的答力漫衍较平均，印版较好不天贴在滚筒暗不天，不陈其不推伸变形较不小，套印差错较不小。

The present experiment demonstrated that the unhomogeneity of surface tension induced by gradient magnetic field near the surface of liquid could lead to surface deformation, the quantity and direction of deformation are directly related to the distribution of gradient filed, and a new way to the research of the kinetics of Buoyant-Thermcapillary Convection is proposed.

得到了结论：液体表面附近处的梯度磁场将引起表面张力的不均匀而使其发生变形，变形量及方向与磁场强度和梯度的空间分布有直接关系，为浮力-热毛细对流的相关研究提供一种新的途径。

For the effect of surface oxidation on emissivity:(1) most oxidized samples have higher emissivity than unoxidized samples, except AL 2024 and AL 7005. The exception is due to roughened surface caused by the onset of melt and the change of surface color at high heating temperature.

铝合金有氧化与无氧化对放射率的影响：(1)大部份铝合金有氧化的放射率皆大於无氧化的放射率，除了AL 2024与AL 7005，因为熔化造成表面粗糙度增加及高温加热时表面色泽的改变导致无氧化的放射率大於有氧化的放射率。

Data indicate that wetting property of self-bonding fiberboard is better than MDF, that wetting property of sanded surface of self-bonding fiberboard made with Method I is inferior to that of unsanded fiberboard, but opposite results to the comparison between sanded surface of self-bonding fiberboard made with Method II and unsanded surface, and that self-bonding fiberboard without waterproof agent has better wetting property than that with waterproof agent.

结果表明：(1)无胶木材纤维纤维板的润湿性比中密度纤维板好；(2)利用无胶纤维板工艺1制作的无胶板砂磨表面的润湿性比未砂磨表面润湿性差，但用无胶纤维板工艺2制作的无胶纤维板的砂磨表面润湿性比朱砂表面润湿性好；(3)未加防水剂的无胶纤维板的表面润湿性比加防水剂的无胶纤维板的润湿性好。

The apex rubber is formed by winding an unvulcanized rubber strip along the assembly forming surface from a starting position constituted by the radially outer peripheral surface of the bead core supported on the receiving surface so as to laminate in a tapered cross sectional shape.

通过从开始位置沿着组件形成面卷绕未硫化的橡胶条使其层叠成渐缩的横截面形状而形成三角胶芯，所述开始位置由支撑在所述接收面上的胎圈芯的径向外周面构成。

The result showed that Wote and PAM increased the average temperature of the earth's surface, temperatures of 10cm soil, 20cm soil and the lowest temperature of the earth's surface, but reduced the highest temperature of the earth's surface in reviving phase. Soil moisture was increased by using Wote and PAM, and the soil moisture of 0-30cm soil in florescence and fruiting phase was also increased.

结果表明，施用沃特和FAM降低了西瓜缓苗期的地表最高温度，提高了地表的平均温度、最低温度及10cm土层和20cm土层的土壤温度，增加了土壤的含水量，特别是开花坐瓜期0~30cm土层的土壤含水量。

In view of this issue, the surface survey software in the GeoMountain Acquisition System, through manmachine interactive processing and interpretation of micro VSP, micro logging, mallangle refraction as well as twinwell microlog, realizes surface velocity inversion and establishes an exact surface physical model, thus guiding field excitation as well as receiving and providing reliable data for the static method.

针对该问题，GeoMountain采集工程师表层调查软件通过对微VSP、微测井、小折射和双井微测井等资料的人机交互处理和解释，实现了表层速度反演，建立了准确的表层物理模型，从而指导野外激发、接收，为静校正量计算提供了可靠的数据。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。