1)  electric quadrupole
电四极
2)  electric quadrupole moment
电四极矩
1.
By comparing the integrative approach and Dirichlet formula to calculate inertia tensor and electric quadrupole moment,the author not only draw a conclusion that calculating by using Dirichlet formula is easier and convinent,but also worked out the calculating method of inertia tensor and electic quadrupole moment of a kind of inhomogenous ellipsoid.
对惯量张量、电四极矩用积分法计算和狄利克莱公式计算作对比,表明用狄利克莱公式[1]计算简洁、方便。
2.
This paper given the physical image of electric potential multipole expansion,and the compare analyses of definitiones of electric quadrupole moment are also given.
给出电势多极展开中多极子的物理图象 ,并对电四极矩的几个定义式作对照分析。
3)  four molecules
电四极子
4)  electric quadrupole transition
电四极跃迁
5)  electric quadrupole radiation
电四极辐射
1.
A model is established in this paper,which,by making an analogy between electric quadrupole radiation and gravitational radiation,leads to a formula for the total radiation power of the gravitational radiation for a binary system,similar to the result given by GTR.
建立一个电学模型,将电四极辐射和引力辐射进行类比,得到双星系统引力辐射功率。
6)  electric quadrupole
电四极矩E2
参考词条
补充资料:电四极矩
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性质: 描述电荷在物体上分布的一种方式。它由四个既不会产生净电荷,也不会产生净偶极矩的电荷排布而成。如二氧化碳分子,其电荷的分布形式是:δ-O=δ+Cδ+=Oδ-,这种电荷分布既无净电荷(非单极子),也没有电偶极矩(非偶极子),但是其电四极矩不为零,因而它是电四极子。实际上,存在2n多极子,n=0是单极子,常称为点电荷;n=1是偶极子,其偶极矩不为零;n=2是四极子;n=3是八极子等。2n极子所产生的电势按1/rn+1的函数关系随距离下降。不同的多极子与电场的不同特性发生作用,电单极子与电势发生作用;电偶极矩与电场强度相互作用;电四极矩与电场强度的梯度相互作用等。

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