The manufacture technology of sintered steel filter and influence of primary particle shape and size, pressing pressure and sintering temperature on filtering performance are discussed.
较详细地论述了不锈钢粉末冶金过滤器的制造工艺及原始粉末形状、粒度、压制压力和烧结温度对过滤性能的影响。
Be due to a great variety and minute particle size and multivariate shape and great difference in particle's size, which brings difficulty to separation of pollens.
但由于花粉种类繁多、颗粒微小、不同种类花粉形状多变且大小相差很大，这给花粉的分选带来极大困难。
It has much difference in property and production rate while freezing food products with different particle size weight and shape.
它在冻结不同颗粒大小，不同质量和形状的产品时其性能和产量有很大区别。
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