SWYL the series double-wire press filter introduces the vanguard technology from the US, after the digestion absorption, develops one successful kind of thick liquid concentration handling equipment, can filter pressing massive Paper pulp continuously. The product uses the high strength material manufacture, has the big handling ability, the high dehydrated efficiency, the low power consumption, low service life and so on outstanding feature, widely applies in the papermaking profession. Simultaneously uses the high quality to filter the belt, guarantees filter press's performance and the quality.
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Child piano class most was once a week or twice a week, after the child class which has accepted certain knowledge instilled into, it requires certain time to digestion and absorption.
现在的儿童钢琴课多数是一周两节或一周一节，孩子课上接受了一定的知识灌输后，就需要一定的时间进行消化、吸收。
Methods: the sample, after the nitric acid and the perchloric acid digestion was induced in the flame atom absorption spectrophotometer with standard series comparison quota.
方法：样品用硝酸和高氯酸消化后，导入火焰原子吸收分光光度计中，与标准系列比较定量。
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