Trouble caused by pitch deposition in newsprint production of Guangzhou Paper Mill is described. Chemical control method and process control method for controlling pitch deposition are discussed.
主要介绍了新闻纸生产中树脂的沉积及其造成的障碍，重点阐述了目前广州造纸有限公司新闻纸生产中控制树脂沉积的方法。
IPM is an effective pest control method that uses information on the life cycle of the pest and incorporates nonchemical and chemical methods.
这种方法是一种有效的综合运用非化学和化学方法的方法，并充分利用害虫生长周期的一种方法。
Method to monitor sterilization effect comprehensively, adopt biological indicator and chemical indicator to control different parameter and mechanical status during the sterilization.
方法采用生物指示剂、化学指示剂和控制灭菌过程的各种参数及机械状况，对灭菌效果进行综合监测。
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