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  • ISO 7742-1988 - 中外标准 - - 1988/6 - 现行
    The method consists in passaging of the material through a rotating sample divider and collecting of the fractions, followed by rejection or recombination of some of the fractions. By choosing suitable equipment it is applicable to any mass above a minimum defined by size and number of particles.
    肥料抽样方法还原法FertilizersQuantityReduction methodsSample divisionSamplesSampling methodsSoil improving materials
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