Revenue leakage risk mostly appears in the process of running and maintaining the BOSS system, so, how to control and reduce it is becoming the Operators' focus.

收入流失的风险主要发生在BOSS系统的运行和维护过程中。如何有效的控制BOSS的收入流失，成为电信运营商关注的热点。

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Active noise control (ANC) is a new high technology integrated with acoustic, adaptive control and digital signal process and it has become the research focus center of noise control.

主动噪声控制是集声学、自适应控制及数字信号处理等技术为一体的高新技术，已成为国内外噪声控制界的研究热点。

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Reheating furnace is main process equipment in the Metallurgical firm, and its control strategy is an important focus of research in process control field.

加热炉是冶金企业主要的过程设备，其自动控制策略是过程控制领域内的一个重要的研究方向。

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