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1)  four-pole electric apparatus
四极电器
2)  quadrupole ['kwɔdrə,pəul]
四极器
3)  four-probe method
四电极法
1.
Electrical resistivity measurements of carbon fiber reinforced cement-based (CFRC) are conducted using the four-probe method.
研究四电极法中电板位置、电流大小、交直流等对碳纤维水泥基复合材料(CFRC)圆柱试样电阻率测试的影响。
4)  four-electrode
四电极
1.
A solution for impedance measurement with four-electrode is designed here according to the requirements of liquid impedance measurement.
根据液体阻抗测量需要,提出了可用于四电极的测量方案。
2.
An impedance spectroscopy measurement system for conductive aqueous solution at medium to low frequencies is designed using the four-electrode measurement theory.
介绍一套基于四电极测量原理的中低频液体阻抗测量系统,采用四电极的测量探头用于电导性液体中低频阻抗谱的测量。
5)  quadrupolar electricfield
四极电场
6)  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。
补充资料:“质子-电子偶极-偶极”质子弛豫增强


“质子-电子偶极-偶极”质子弛豫增强


  物理学术语。原子核外层中不成对的电子质量小,但磁动性很强,可使局部磁场波动增强,促使氢质子弛豫加快,从而使T1和T2缩短,这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子,所以其离子往往具有PEDDPRE,可用来作顺磁性对比剂,如钆(Gd)。Gd在外层有7个不成对电子,具有很强的顺磁性。
  
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