The other is to restrain the reflecting field by selecting a suitable radius as filling with the double-deck magnetic substances, which have great differences in permeability.
当天线器内部为双层磁性介质，且二者磁导率有显著差异时，选择合适的半径可抑制反射场。
The invention provides an electromagnetic wire coil, which comprises a wire coil rack and a wire coil; and granular or powdery magnetic substances are dispersed in the wire coil rack.
本发明提供了一种电磁线盘包括线盘盘架和线圈，所述线盘盘架中分散设 有颗粒状或者粉末状的磁性物。
Various substances differ widely in their magnetic characteristics.
不同的物质在磁性方面各具特征。
This product USES a new type magnetic absorption filter fabrication, which can effectively filter the tar in cigarettes and other harmful substances.
本品采用新型磁石吸附过滤工艺制作，可有效过滤香烟中的焦油等有害物质。
Measurements of the magnetic and gravity field of the earth are used extensively to explore its structure, particularly in the search for gold, oil, diamonds and other substances of economic value.
地球磁场和重力场的测量广泛用于研究地质构造，尤其是寻找矿产、石油、黄金及其它有经济价值的物质。
Mass spectrometry: Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields.
质谱测定法：一种分析方法，利用电场和磁场通过质量来将气体离子分类，从而鉴定化学物质。
Various substances differ widely in their magnetic characteristics.
由于磁极特征，各种物质差异很大。
Various substances differ widely in their magnetic characteristics.
由于磁极特征，各种物质差异很大。
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