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isobaric adj.1.【氣象學】等壓線的。2.【化學】同量異位的。...

isobath

The elastic constants of bcc li , na and fcc al crystals have been evaluated as functions of pressure and temperature by using a new model together with ab initio electronic structure and total - energy calculations . in the model it is considered that the elastic constants of crystals at a given temperature and pressure can be calculated using a conventional density functional method but modified by a new set lattice constants due to the isobaric volumetric thermal expansion when temperature rise from absolute zero to the given one 本文對高壓及有限溫度立方金屬彈性常數的計算方法進行了研究,建立了一種考慮溫度效應的物理模型,基于這個模型和從頭算方法,對典型的立方晶系金屬li 、 na 、 al在高壓及有限溫度(熔點以下溫度)彈性常數進行了計算,取得了與已有實驗結果較好相符的計算結果。

For another thing , we suggest a new model of potential energy and deduce a new isothermal eos and apply it under the condition of high pressure and compare the theoretical results to the experimental data in order to test its applicability and effectiveness . in addition , a new isobaric eos of four parameters is obtained by using the second isothermal bulk modulus and we may test , compare and analysis it by comparing with the experimental data . in the introduction , we briefly review the development history of eos , illustrate its typical applications in many fields and recommend its predominant methods of investigating eos at present 本論文從基本的熱力學關系式出發,提出了一個新的勢函數模型,推導出了一個新的等溫物態方程,并將其應用至高壓下的實驗數據與理論進行了比較和分析,從而驗證了它的有效性與實用性;本論文還在勢函數理論的基礎上,通過引進等溫體積彈性模量的二階導數,推導出了一個新的四參量的等壓物態方程,并對得到的方程進行了驗證、比較和分析。

Through analysis of potential vorticity in isobaric surface field , in low - troposphere a positive potential vorticity disturbance exist and form incline disturbance column northward before rainstorm generation , at the same time have also reflected positive potential vorticity disturbance for severe convection weather trigger role in lower - troposphere ; soon positive potential vorticity disturbance in high - troposphere downward , form one vertical disturbance column , now corresponding precipitation develop stage ; in the prosperous stage of rainstorm that maintains isolines of horizontal distribution and still have straight positive potential vorticity disturbance in 600 - 700 hpa isobaric surface field ; when near ground arises negative potential vorticity disturbance , precipitation also weaken 通過對等壓面的位渦分析,發現了在暴雨發生前,在對流層低層有正位渦擾動存在并向北形成傾斜的擾動柱,同時也反映了對流層低層正位渦擾動對強對流天氣的觸發作用;隨后高層正位渦向下擾動,形成一個垂直擾動柱,這時對應降水的發展階段:在暴雨的鼎盛階段, 600 700hpa上空維持水平分布的等值線,在其上還有正的位渦擾動;當近地面出現負的位渦擾動時,降水隨之也減弱。

In the atmosphere , geopotential varies with altitudes and across latitudes . on an isobaric surface , higher geopotential implies higher potential energy and vice versa . just like streams flow according to the layout of terrain , air will flow from high to low geopotential regions 在等壓面天氣圖上,位勢高的地方位能較高,位勢低的地方位能較低,高空的氣流會由前者流向后者,情況有點像河川根據山脊高低的分布而流動一樣。

Isobaric identification with gf - tof method is based on the different time of flight caused by the different energy loss . the resolution of gf - tof is mainly affected by two factors . first , the rises time of current pulse from start and stop detector Gf - tof方法對同量異位素的分辨取決于e的不同而產生的時間不同,時間分辨僅來源于定時探測器電流脈沖上升時間的快慢和離子在氣體介質中的能量離散。

The neutron halo structure of the first excited state of i3c and the neutron - proton halo structure of the second excited state of 6li , which is the isobaric analog state of the ground state of 6he , were considered the most probable candidates to search for 前者的中子暈結構已為實驗所證實,后者是中子暈核~ 6he (基態)的同位旋相似態,其中子-質子暈結構至今尚未被實驗證實。

For “ upper - air “ , weather maps are usually drawn for isobaric ( i . e . equal pressure ) surfaces following the practice of conventional upper - air observations and analysis . air density and atmospheric pressure generally decrease as altitude increases 至于高空方面,由于常規的高空觀測與大氣分析都是在標準等氣壓面上進行,所以高空天氣圖亦習慣在等壓面上繪制。

The potential vorticity ( pv ) on isobaric and isentropic surface was studied . furthermore , the pv structure of another rainstorm caused by the 9711 typhoon was compared with it and the difference of the two rainstorm was discussed 另外又與1997年第11號臺風登陸北上造成山東全省大到暴雨過程的位渦場結構進行了對比分析,討論了兩次暴雨過程位渦場結構的異同。

We also compare the deduced new eos to the other famous eos . in chapter three , some common isobaric equations of state and the related parameters are introduced . we list some empirical eos and clarify their models of theory 列出了一些常用的經驗物態方程,并闡述了它們的理論模型,同時也對本文提出的物態方程進行了驗證、比較。

We get several useful conclusions on isobaric evaporation , isothermal flash , isobaric condensation , isothermal compressed condensation . an analysis on the micro - layer evaporation model is also discussed in the paper 在定壓汽化、定溫降壓自蒸發、定壓凝結、定溫加壓凝結、可用能、微層蒸發模型幾個方面得出了一些有用的結論。

First , the application and development of ams . second , the isobaric identification methods in ams measurement . third , the principle , design and test of the gf - tof detector system 文章第三部分對gf - tof方法進行了詳細的論述,利用放射性活度為100 ci的~ ( 241 ) am粒子對探測器系統進行了比較系統的調試。

The interaction of the positive isobaric moist potential vorticity disturbance at low and upper level is a possible mechanism of the genesis and development of mesoscale vortex 發現高低空正的濕位渦擾動的共同作用是對流層中低層中尺度低渦生成的一種可能機制。

In view of the applied condition , the equations of state are assorted as follows : isothermal eos , isobaric eos , and high - temperature eos 從適用的宏觀條件、范圍上來分,固體物態方程可分為三大類:等溫態方程,等壓態方程,高溫態方程(相對德拜溫度) 。

Isobaric identification is very important in accelerator mass spectrometry measurement . be , 14c , 26a1 , 36c1 and 41ca have been measured using ams 在加速器質譜( acceleratormassspectrometry ,簡稱ams )測量中,同量異位素的鑒別具有十分重要的意義。

The positive storm - relative helicity center is accompany with low - level jet in 850 - hpa isobaric surface fields 通過分析我們發現了正的相對螺旋度中心與850hpa低空急流的演變過程是一致的。

Study on isobaric vapor - liquid equilibrium for vinyltrichlorosilane vinyltrimethoxysilane binary system 乙烯基三甲氧基硅烷二元體系等壓汽液平衡研究

Isobaric heat capacity 等壓熱容

Standard isobaric surfaces 標準等壓面

Isobaric weight - change curve 等壓重量變化曲線