查询词典 vapor density

According to Ag2S-Ga2S3 pseudobinary phase diagram, AgGaS2 polycrystalline materials with the congruent melt composition were synthesized by a new method, i. e. vapor transporting method with two-zone temperature oscillation, and generic vapor transporting method respectively.

根据对Ag2S-Ga2S3赝二元相图的分析，采用同成分点配料，分别采用一种新方法―两温区气相输运温度振荡法和普通气相输运法合成AgGaS2多晶材料。

The hydrologic cycle, a major topi c in this science, is the complete cycle of phenomena through which water passes, beginning as atmospheric water vapor, passing into liquid and solid form as precipitation, thence along and into the ground surface, and finally again returning to the form of atmospheric water vapor by means of evaporation and transpiration.

水文循环，作为该学科中的一个主要课题，指的是水所经过的诸现象的整个循环过程，开始时是作为大气中的水蒸气，转而作为雨、雪、露、雹一类的降水量经过液体和固体形态，由此而沿着地层表面分布或进入地层表面，最终通过蒸发和散发作用再度回复到大气水蒸气的形态。

This embodiment will illustrate that the present invention of the (poly trimethylene terephthalate) PTT laminated film performs better than its PET counterpart in terms of vapor impermeability, flexibility and warpage; its vapor impermeability is about equal to a TPT back sheet, while flexibility and warpage are better than TPT back sheet.

本实施例说明本发明聚对苯二甲酸丙二醇酯薄膜复合成的叠层膜的抗水汽渗透性、挠性和翘曲度优于多层聚对苯二甲酸乙二醇酯薄膜复合形成的叠层膜，抗水汽渗透性与TPT背板基本相当，挠性和翘曲度优于TPT背板。

2Water Vapor Permeance:The time rate ofwater vapor transmission through unit area offlatmaterial or construction induced by unitvapor pressure difference between two spe-cific surfaces,underspecified temperature andhumidity conditions.

水蒸气透过量：保持试样两表面特定的温湿度环境，在单位时间内，由试样两侧单位水蒸气压差引起的，在单位面积上透过样品的水蒸气总量。

The basic collocates are second stage vapor recovery system and membrane vapor processing system.

用户单位可根据实际需求选择不同配置方案。

The temperature reduces, the air reduces including water vapor ability, low levels water vapor is attached to the grass, the leaf superior, and congeals the tiny water drop, namely dew.

温度降低，空气含水汽的能力减小，大气低层的水汽就附在草上、树叶上等，并凝成细小的水珠，即露水。

By the combination of experimental results with theory of crystal growth, some growth models and growth mechanisms were proposed. Research results confirmed that pillar-shaped TaC whisker with spherical droplet at the end grew via a vapor-liquid-solid mechanism, pillar-shaped whisker with pyramid-like end was formed via a vapor-solid mechanism, awl-shaped TaC whisker with zigzag end formed via a liquid-solid mechanism, awl-shaped TaC whisker with growth step at the end has a growth mechanism of screw dislocation mechanism. The growth mechanism of dumbbell-shaped MgO nanowhisker and NaCl particle-decorated MgO nanowhisker is VS; C and MgO powder-yielded MgO nanowhisker was formed via a VLS mechanism, Mg powder-yielded MgO microwhisker and MgO microsized or nanosized crystal sheet grew via a VS mechanism. In the Si and SiO〓 nanostructures, Si nanowires formed in higher-temperature zone grew via oxide-assistant mechanism, while Si nanowires or nanorods formed in lower-temperature zone have a growth mechanism of VLS, and the growth mechanism of SiO〓 nanowires is VS.

研究确定呈平直柱状且头部带有球形颗粒的TaC晶须是通过气-液-固机制生长；头部呈之字型的锥状TaC晶须则通过液-固机制生长；晶须头部为四棱锥状的粗长TaC晶须的生长机制是VS机制；顶端呈锥状且有生长台阶的TaC晶须通过螺位错机制生长；哑铃状氧化镁晶须和氯化钠颗粒修饰的氧化镁纳米晶须的生长机制是气-固机制：当采用C+MgO粉提Mg源时形成的氧化镁纳米晶须的生长机制是VLS，而采用直接热蒸发Mg粉时得到的氧化镁微米晶须的生长机制为VS，纳米和微米晶片的生长机制均为VS机制；在高温区，硅纳米线的生长机制是助氧化机制，在低温区硅纳米线和纳米棒的生长机制是VLS机制，而氧化硅纳米线的生长中VS机制占主导地位。

The process of vapor pressure reducing was achieved through decompression valve and throttling disk. Centrifugal nozzles were installed along the circumference to makewater sprayed more uniform and atomization effect better. The atomization could be optimized and heat transfer between water and vapor was intensified in Ventri. The airproofed-baffle and the holes at the outlet of mixed-pipe, prevented droplet with bigger diameter from entering the turbine, and thus protected the vanes.

减压阀与节流孔板相配合，实现对高压蒸汽的降压过程；离心式喷嘴环形布置，使喷水均匀，雾化效果好；文丘利管的使用，进一步优化了减温水的雾化效果，强化了汽水间的传热效果；混合管出口设置密封挡板和出流孔，阻止了直径较大的水滴进入汽轮机，保护了叶片。

The saturation vapor pressure is the equilibrium water vapor pressure in a closed chamber containing liquid water.

饱和蒸气压是平衡水蒸汽压力在封闭的室内载有液态水。

A high-speed camera is used to visualize the flow structures,and Laser Doppler Velocity is employed for velocity measurement.The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。