Cabinets enclose a rack, which is a frame that provides a means for mounting electronic equipment.

机箱包围着机架，而机架是一个机框，供安装电子设备用。

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The rack refers specifically to the frame that provides a means for mounting electronic equipment, while a cabinet is fitted with doors and side panels.

机架是专指供安装电子设备的框架，而机箱配有门和边板。

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Despite the cost of the equipment, the setting was modest: a 20 by 20 workroom containing a communications relay rack and several mismatched tables full of electronic equipment.

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