Compared with relay in controlling lathes, PLC has some advantages such as high reliability, low consumption, small volume, easy maintenance, short developing circle, low price and so on.

PLC在机床控制方面与传统的继电器控制系统相比，具有可靠性高、体积小、功耗低、维护简单、开发周期短、价格低等特点。

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Small volume, easy for maintenance, economy and high efficiency.

体积小，维护简单，经济高效。

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The liquid nitrogen union must have several advantages, such as small volume, easy to assemble and disassemble, long life, etc.

液氮管路活接头必须具有空间尺寸小、安装拆卸方便、使用周期长的特点。

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All things considered, however, the ScanJet 6200C is a reasonable choice for the low-volume corporate user who needs an easy-to-use scanner primarily for text documents.

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The built-in touchpad makes web-surfing a pleasure, while channel and volume buttons are on the edge for easy access.

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The large rubberized buttons make it easy to skip tracks and adjust volume even during active use.

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