cobble and gravel中文,cobble and gravel的意思,cobble and gravel翻译及用法
2026-04-12 20:20浏览次数 21
cobble and gravel
卵砾石
cobble and gravel 例句
英汉例句
in drilling cobble and gravel formation, diamond enhanced tungsten carbide composite spherical crown button bits without strengthened gage achieve an average drilling rate of 2.