The ETC mainly consists of RF reader, laser calssification sensors, video enforcement systems and lane controller.
电子收费系统主要由射频读卡器、激光车型传感器、逃费抓拍装置和车道控制器组成。
Zero watermark can alleviate the risk of calssification in some degree and provides a basis for beforehand digital watermark algorithm research.
特别是数字零水印扩展方案大大降低了算法被逆向破解的风险，并为事前预防型数字水印算法的研究奠定了理论基础。
As a major part in railroad freight transmit in railroad classification yard. The "hump" and switches to classification tracks are major system in freightcar calssification.
前言：铁路货物运输枢纽的调车场中，驼峰调车是主要的调车手段。
As a major part in railroad freight transmit in railroad classification yard. The "hump" and switches to classification tracks are major system in freightcar calssification.
前言：铁路货物运输枢纽的调车场中，驼峰调车是主要的调车手段。
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