stratified seam sample
stratified seam sample
[煤炭科技英汉词典]
stratified seam sample分层煤样
按规定从煤和夹矸的每一自然分层中分别采取的煤样。
是什么意思,stratified seam sample的解释,stratified seam sample的翻译
stratified seam sample
[煤炭科技英汉词典]
stratified seam sample是什么意思,stratified seam sample的解释,stratified seam sample的翻译