dull-banded coal的意思|示意
美 / /
英 / /
dull-banded煤
dull-banded coal的网络常见释义
暗淡条带煤 ... 条带变细,条带锐化 band sharpening 暗淡条带煤 dull-banded coal 薄条带状煤 finely banded coal; thin-banded coal ...