Online marking system has three parts, the data source subsystem, the marking subsystem, and the management subsystem.

网上阅卷系统分为数据源子系统、评卷子系统、管理子系统三部分。

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Laser, power source, the work platform USES the integration structural design. The efficiency of marking is high and marking metal is better.

激光器、电源、工作台一体化结构，打标效率高，金属打标效果好。

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Oct 2, 2012 -- Valve, creators of best-selling game franchises (such as Counter-Strike, Half-Life, Left 4 Dead, Portal, and Team Fortress) and leading technologies (such as Steam and Source), today announced the first Software titles have launched via Steam, marking a major expansion to the platform known as a leading destination for PC and Mac games.

ENGADGET: First non-game titles now available on Steam, game dev tools lead the charge