... grade 等级 graded coal 筛过煤 graded aggregate 分级粒料,级配骨料...
基于1个网页-相关网页
coal graded 分粒煤
graded d coal 过筛煤
Article 30 coal mining enterprises shall exercise strict supervision, inspection and control of coal product quality. Such quality shall be graded according to the national or trade standards.
第三十条煤矿企业应当加强煤炭产品质量的监督检查和管理。煤炭产品质量应当按照国家标准或者行业标准分等论级。
youdao
应用推荐
模块上移
模块下移
不移动