edge coal陡: steep; precipitous斜: oblique; slanting; skew; bev ...煤层: coal rake; coal seam; coal b ...陡倾斜煤层: half-edge seam缓倾斜煤层: gently inclined coal seam; lightly pitching coal下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:陡斜煤层，即可在微信中查询翻译
