查询词典 diffusivity

The results showed that the flake graphite has greatest effect on the thermal conductivity and thermal diffusivity of cast iron, the second is vermicular graphite, the third is nodular graphite.

用激光脉冲法和比较法测量了不同种类铸铁300~1300K的热物理参数，并对铸铁热物性与显微组织的关系作了初步讨论。

The concepts of degree of enthalpy and enthalpy diffusivity are introduced in terms of the concept of enthalpy in calorifics. Heat equation of enthalpy is constructed and converted into heat equation of temperature by latent heat.

因此根据热力学中焓的概念，提出了焓度和焓扩散系数的概念，建立了焓的热传导方程并根据潜热把焓的热传导方程转化为温度场方程。

High performance concrete ; durability design ; chlorion diffusivity ; absolute volume method ; NEL met

高性能混凝土；耐久性设计；氯离子扩散系数；绝对体积法； NEL法

Methods. Apparent glucose diffusivity measurements were performed on 10 axial and 10 radial AF specimens from bovine coccygeal discs.

测量来自牛尾骨椎间盘纤维环10个轴的和10个辐射的样品来获得葡萄糖近似扩散系数。

Because of the high diffusivity and solubility of oxygen in Ti〓Al, once the oxidation layer loss its protection, oxygen can easily enter into the alloy and thus considerable oxygen contaminated region is formed, which would embrittle Ti〓Al alloys and seriously decrease their thermal stability and high temperature properties.

氧在Ti〓Al基合金中具有较高的固溶度，当表层氧化膜缺乏保护性时，氧得以在合金基体表面部分形成厚度可观的氧污染层，使本身塑性就较差的Ti〓Al基合金脆化，从而严重影响Ti〓Al基合金的热稳定性和高温力学性能。

The diffusivity of ethanethiol in flexible MOR is higher than that in flexible MFI, because the 12 member ring in MOR is larger than the 10 member ring in MFI.

对比这两种沸石，MOR中的扩散系数要比MFI沸石中大，这是因为乙硫醇分子在MOR12元环中扩散更易进行所致。

Testing for"K"、diffusivity"D"of wetland soil transmissivity and simulation of hydrologic processes of typical wetlands are made based on the indoor dynamic modeling experiment and the mathematic model simulations. The hydrologic response of river distinguish form that of the wetlands. And this is because that wetland has special hydrologic functions. The hydroperiod of wetlands is coincident with the precipitation period of watershed.

通过室内动态模拟实验测定了不同断面沼泽土壤的导水率K和扩散率D，水文数学模型RMA2模型和GIS相结合模拟了典型沼泽湿地的水文过程，河流和沼泽湿地的水文响向应具有明显的差异性，这是沼泽湿地水系统具有特殊水文功能的基础，沼泽的水文周期与流域降水周期是一致的。

At 〓 sites. 8. No matter in what type of zeolite (4A, NaY or ZSM-5), the diffusivity vs. adsorption amount curve of water consists of two noncontinuous lines , which will become one at last with the increase of pre-adsorbed water amount.

对水的扩散进行研究，发现不论哪种分子筛(NaY、4A或NaZSM-5)，水的扩散系数-吸附量曲线均由不连续的两段组成，随分子筛含水量的增加，最后变为一条连续性的曲线。

High effective decontamination with minimum remainder, erosion, destruc- tiveness may be realized by taking advantage of the high diffusivity, low viscosity, rea- sonable solubility and special separation property in supercritical phase, during which the recycle and reuse of the materials is promoted and the cost for waste management is reduced to the least.

利用超临界状态下流体的高扩散性、低的粘度、良好的溶解能力和独特的分离性质，有可能实现高效去污、废物量最小化、最小的侵蚀性和破坏性、最低的放射性废物管理费用。

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。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失