单词	烟煤材料
释义	烟煤材料bituminous material
随便看	maintenance, direct maintenance-- direct maintenance documentation maintenance documentation，md maintenance door maintenance down time maintenance downtime maintenance dredging maintenance drug maintenance echelon maintenance engineer maintenance--engineer maintenance engineering maintenance engineering analysis maintenance engineering analysis data maintenance engineering analysis data (system) maintenance engineering analysis (mea) maintenance engineering analysis record maintenance engineering analysis record，mear maintenance entity maintenance expenditure maintenance factor maintenance factor (obsolete) maintenance fault list maintenance food