"At low applied forces, the hardness of rhenium diboride is equivalent to cubic boron nitride, the second-hardest material known, Kaner said.
在低作用力下,二硼化硬度与立方结构氮化硼相等,而氮化硼是第二硬。
"At low applied forces, the hardness of rhenium diboride is equivalent to cubic boron nitride, the second-hardest material known, Kaner said.
在低作用力下,二硼化硬度与立方结构氮化硼相等,而氮化硼是第二硬。
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