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1)  micro-perturbation of volume
微体积扰动
2)  perturbation [英][,pɜ:tə'beɪʃn]  [美]['pɝtɚ'beʃən]
扰动;微扰
3)  product perturbation
乘积扰动
1.
The aim of this paper is to prove the product perturbation theorems for the C semigroups and to prove the same theorems for the n th order integrated semigroups by making use of the relations between the two semigroups.
研究指数有界C半群的乘积扰动问题,并借助C半群与积分半群的关系,得到了n阶积分半群的相应结
2.
The paper discusses the perturbation theory for n-times integrated C-semig roups,the commuting perturbation theory is obtained;by the relations of n-times integrated C-semigroups and C-semigroups,the two product perturbation theories for n-times integrated C-semigroups are also obtained.
研究了n次积分C半群的可交换扰动问题,得到其扰动定理;并根据n次积分C半群与C半群的关系得到了n次积分C半群的两个乘积扰动定理。
4)  perturbing object
微扰体
1.
A metallic cage made by sputtering silver film onto a thin nylon thread through a specially designed fixture is used as perturbing object to measure the higher modes in a Xband accelerating structure.
介绍了一种用于测试X波段加速管中高阶模电场分布的笼子式微扰体 的研制与标定。
5)  MBPT
多体微扰
1.
Integral processing for the sum of infinite series in MBPT calculation;
积分方法处理多体微扰计算中无穷项求和问题
2.
MBPT Calculation of ~1D-~3D Splittings in Helium Rydberg States;
氦原子Rydberg态~1D-~3D谱项分裂值的多体微扰计算
6)  perturbation [英][,pɜ:tə'beɪʃn]  [美]['pɝtɚ'beʃən]
微扰动
1.
Additive drag perturbation method for measuring active drag in swimming;
测量游泳动态阻力的附加阻力微扰动法
补充资料:微元体积
分子式:
CAS号:

性质:在连续流动设备中取某一微小单元,其中物系组成及温度、压力等参数均可看作相同,此微小单元称为微元体积。微元体积的形状则视设备形状及操作特性而变。若设备呈管状,其中物系组成及操作参数只随轴向长度而变,则取长度为dl而截面积与设备截面积相同的微元段作为微元体积。如果设备中除了存在轴向参数变化外,径向也存在参数变化,但对中心轴对称,则取长度为dl,内径为R,厚度为dR的环柱体作为微元体积。对于球形固体颗粒或催化剂内同时存在反应及传质、传热过程时,则取半径为R,厚度为dR的球壳作为微元体积。

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