Among flour beetles, males routinely force themselves on other males.
2
复印机用一面镜子，一个滚筒和专门的黑粉可以复印。
The photocopier This makes copies, using a mirror, a roller and special black powder.
3
采用黑粉低填充HDPE、LLDPE基体制备纳米复合材料，研究了复合材料的结构和性质。
The nanocomposites were prepared by low filling black powder to HDPE(High-Density Polyethylene) and LLDPE(Linear Low-Density of Polyethylene), the structures and properties of composites were studied.
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