stevein阶: steps; stairs状: form; shape矿脉: a vein of ore; mineral vein【矿物】束状矿脉。: chambered rein鞍状矿脉: saddle reef; saddle vein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:阶状矿脉，即可在微信中查询翻译
