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北京电子管厂试制成功了WID-C301型粉末粒度分布测试仪。是国内首创,改变了我国靠进口仪器测粉末粒度的局面。粉末粒度组成的测试是所有以粉末为原料的工业生产中不可缺少的重要物理性能指标。如粉末粒度不同,硬质合金刀具就有不同的冲击韧性和耐损性;电视显象管用的荧光粉粒度要求在100～150微米范围;还有水泥、面粉、环保中的烟尘都有粒度指标。
Beijing Electronic Tube Factory trial successful WID-C301 powder particle size distribution tester. Is the first in China, changing the size of our country by measuring the size of imported instruments. The testing of the particle size composition of powders is an indispensable and important physical property indicator for all industrial production of powders. Such as different powder particle size, carbide cutting tools have different impact toughness and resistance to damage; TV display tube with phosphor particle size requirements in the range of 100 to 150 microns; there are cement, flour, dust in environmental protection has a particle size index .