romanechite钡: barium硬: hard; stiff; tough锰矿: manganese ore硬锰矿: beldongrite; black hematite; calvonigrite; isiganeite; leptonematite; leptonemerz; manganese hydrate; manganomelane; psilomelane钙硬锰矿: calcium psilomelane; rancieite下载手机词典可随时随地查词查翻译