unbleachedsulfitepulp未漂白亚硫酸盐纸浆
unboundmoisture非结合水份
undecylenicacid十一烯酸
undecylenylalcohol十一烯醇
underwaterconveyor水中输送机
under-burnt欠热
under-clay下盘黏土
under-cooling过冷
under-etching蚀刻不足
under-glazecolor釉下色料
under-glazedecoration釉下彩
undercoat底涂层
undercure欠硫化
undercuring欠硫化
undercut切割不足，蚀刻不足
underdrainequipment底座排水装置
undergroundcontruction地下建筑
underwriter'slaboratories保险业实验室 | 