This paper collects and analyzes the harmonic signals of the CO2 welding machines main transformer, by which researches the effect of welding power source on the main.

对晶闸管CO2焊接电源焊接过程主变压器一次侧产生的谐波信号进行采集分析，以此研究焊接电源对电网的影响。

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The main difference, apart from the scale of the machines, is that the cyclotron fired its particles into a static target whereas the LHC USES contra-rotating beams to achieve head-on collisions.

除了机器的规模，LHC和回旋加速器的主要区别是回旋加速器使粒子撞向静态目标，而LHC用的不是静态目标，用的是逆时针方向传播地质子束来达到正碰。

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VMWare and its main rivals, Citrix and Microsoft, have since developed all kinds of software tools to manage virtual machines-moving them between data centres, for example.

VMWare及其主要对手Citrix和Microsoft，那时起就开发了各种虚拟机管理软件工具，比如让虚拟机在数据中心间迁移的软件。

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Although many felt Betamax was the superior format, most cite the longer recording length of VHS tapes - three hours versus one - and the cheaper manufacturing costs for VHS machines as the main factors why VHS eventually won out.

BBC: NEWS | Technology | Q&A: Death of a format

Whirlpool, which makes household appliances including refrigerators, dishwashers and washing machines, relies on three main drivers: replacement of older appliances, new home construction and discretionary purchases related to renovations or remodeling.

FORBES: How Whirlpool Survived A Rough Recovery From The Housing Crash

The rise of the machines has become so pervasive that many are proclaiming a new industrial revolution, the main difference, of course, being that now even highly educated knowledge workers are getting displaced.

FORBES: We're All Luddites Now