roller powder的意思|示意

The photocopier This makes copies, using a mirror, a roller and special black powder.

复印机用一面镜子，一个滚筒和专门的黑粉可以复印。

Result: the roller press, roller speed and the water content of extract powder had a significant degree of influence.

结果：轧轮压力、轧轮转速和浸膏粉含水量对颗粒得率和颗粒脆碎度有显著性影响。

Method: Inspect the influence of roller press, roller speed and the water content of extract powder on yield and friability of particle diameter.

方法：考察轧轮压力、轧轮转速和浸膏粉含水量对颗粒得率和颗粒脆碎度的影响。