Mechanism of metal powder rolling where powder weight keeps constant before and after powder rolling, is different from that of conventional dense metal rolling.
金属粉末轧制机理与传统的致密金属轧制机理不同，在这里适用的是粉末轧制前后粉末重量相等原理。
2
Dense cultivation is the key to prepare concentrated bacterial powder for vegetable fermentation.
菌体高密度培养是制备浓缩型蔬菜发酵专用菌粉的关键。
3
Powder Metallurgy produces fully dense pressed components and is very economic for high volume production of small simple shapes.