No soil is pureclay, silt, sand or gravel, but a soil may contain a large amount of one of these.
没有什么土壤是单纯的粘粒、粉粒、砂粒和砾石。只不过是某种土粒为主而已。
2
The traditional deep-hole blasting for tunnels USES pureclay to stem the blast-holes. The efficient energy availability of explosive is not high and the specific explosive consumption is large.
传统的隧道深孔爆破采用纯炮泥堵塞炮眼,炸药的有效能量利用率不高,炸药单耗量大。
3
Pure white and wonderfully delicate, porcelain is what clay potters usually graduate to only after years of honing their skills.