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1.The photoelectric smoke-density control system is designed to monitor and regulate the concentration of pollutants in the air.
光电烟雾密度控制系统旨在监测和调节空气中污染物的浓度。
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2. The new sensor can detect the presence of harmful substances in the environment, providing real-time data for photoelectric smoke-density control.
新型传感器能够检测环境中有害物质的存在，为光电烟雾密度控制提供实时数据。
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3. The effectiveness of the photoelectric smoke-density control system depends on its ability to accurately measure and respond to changes inair quality.
光电烟雾密度控制系统的有效性取决于其准确测量和响应空气质量变化的能力。