Based on practice, the methods to control sand content in flour were presented in respect of wheat purchase, process flow, equipment selection and operation, production management.

在实践的基础上，从原料采购、工艺组合、设备选用及操作、生产管理等方面提出了控制面粉含砂量的方法。

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Products used for the prevention or control of slime growth on materials, equipment and structures, used in industrial processes, e. g. on wood and paper pulp, porous sand strata in oil extraction.

用于防止或控制在用于工业过程中的材料、设备、结构表面粘液菌的生长。

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