Physical, chemical and biological control methods in the purifying water process and the secondary water supply system in Chinese water supply industry are discussed.
重点介绍了目前国内供水行业所采用物理、化学以及生物的方法在水厂净水处理及二次供水过程防除摇蚊污染的研究；
Me is the original mechanical Factory and Ministry of Chemical Industry of the fixed-point process control instrumentation manufacturer.
我仪表厂属原机械部和化工部过程控制仪表的定点生产厂家。
There is a significant autocorrelation in observations from continue process, such as chemical industry, which may not meet with the independent assumption of normal control chart.
化工等连续生产过程，质量指标常常表现出自相关性，违反了常规控制图的独立性假定。
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