And some minutely crystalline varieties, such as flint, may be opaque and of a waxy luster.
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And some minutely crystalline varieties, such as flint, may be opaque and of a waxy luster.
某些细小的结晶变种,如燧石,可能是不透明的,并具有腊样的光泽。
None of the objects that usually accompany male burials a such as weapons, stone battle axes and flint knives a were found in the grave.
男性墓穴中经常发现的随葬品——比如武器、石战斧和燧石刀,在座墓里都没发现。
This paper discusses the performance and application of natural abrasive such as diamond, corundum, garnet, quartz, flint, pumice, diatomite, hematite and perlite.
本文介绍了天然金刚石、天然刚玉、石榴石、石英、燧石、浮岩、硅藻土、赤铁矿、珍珠岩等天然磨料的性能特点和其应用。
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