In this paper, the mechanisms, processing and characteristic of mechanical alloying (ma) are briefly reviewed, and the progresses of the electrical contact materials prepared by ma is described.

介绍了机械合金化技术的基本原理、工艺过程及其特点，阐述了机械合金化(ma)制备电触头材料的研究进展。

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Bulk electrical switches suitable for prefabricated copper and aluminum bus industry, with flat curved, vertical bending, punching, shearing, press Ma, flattening, bending and so on.

适合用于电气开关行业批量预制铜铝母线，具有平弯、立弯、冲孔、剪断、压麻点、矫平、弯管等功能。

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Prof Zhenqiang Ma, an electrical and computer engineer at the University of Wisconsin, argued that the technology could overcome issues with bulky sensors.

BBC: Health