Standard test method for measurement of hydraulic conductivity of porous material using a rigid - wall , compaction - mold permeameter 使用刚性壁压缩模式磁导率计测量多孔性材料液压导电率的标准试验方法
Standard test method for measuring relative complex permittivity and relative magnetic permeability of solid materials at microwave frequencies 微波频率下固体材料相对复介电常数和磁导率测量标准试验方法
The high permeability of the ferromagnetic reeds in a reed relay causes a pronounced skin effect with increasing signal frequency 干簧式继电器中铁磁簧片的高磁导率会随信号频率的增加而产生很强的趋肤效应。
But in the course of magnetic field computation the permeability distribution in soft magnetic materials has to be supposed as known and fixed 该程序在磁场计算中只能假设软磁材料中的磁导率都是已知的固定值。
Left - handed material ( lhm ) is a newly discovered electromagnetic artificial metamaterial with simultaneously negative permittivity and permeability 异向介质是指介电常数和磁导率同时为负值的人工合成电磁材料。
Many materials , including plasmas and metals , have a negative permittivity , but no natural substance has a negative permeability as well 许多物质的介电常数为负，包括电浆及金属等，但在自然界中，却没有任何物质的磁导率也同时为负。
The nh2c and nh15a high permeability material and ferrite cores developed by lfg co . , have been approved to be the new products at province level 公司研发的nh2c高性能软磁铁氧体材料及磁芯超高磁导率nh15a材料及磁芯日前通过省级新产品鉴定。
Moreover , we investigate the case when the atom is placed between two parallel plates and one of the plates is infinitely permeable 作为特殊情况，我们研究了置于两平行介质板(其中一块板的磁导率趋近于无穷大)间的v型三能级原子的量子干涉性质。
The change of composing phases , the internal - stress and microstructure had insignificant effects on the magnetic properties for the s s fiber 纤维化过程引起材料内应力、微组织结构的改变，进而对纤维的磁导率、矫顽力、剩磁性能产生重要的影响。
Especially , they are characteristic of low price and perfect absorbability , so they can be an important absorbent in radar absorbing materials 铁氧体既具有亚铁磁性又有介电特性，对简谐微波电磁场来说，其相对磁导率和相对介电系数均呈现复数形式。
