Walmart plans to use Massmart, which has stores in 14 African countries, as a stepping-stone into a fast-emerging continent.
迈斯玛在14个非洲国家拥有分店，沃尔玛计划利用迈斯玛挺进这个快速崛起的大陆。
2
The oscillation, acceleration and deceleration performance of stepping motor are key factors which influence the operation quality and fast-response of stepping motor system.
步进电动机振荡特性及加（减）速性能是影响步进电动机系统运行质量及快速性的关键。
3
Improving the controlling mode for the driving force of the stepping motor the problem that the temperature of the motor raise too fast in the vacuum condition is solved satisfyingly.