Plainard普莱纳尔plainadj.清楚的；简单的；坦白的；平常的；朴素的；纯的n.平原；广阔的区域adv.完全地；纯粹地plain ridged edge wash basin素色卷边面盆plain helical milling cutter普通螺旋铣刀plain area of Jilin Province吉林省平原区plain spinal roentgenography脊柱单纯X线摄影(法), 脊柱X线平片摄影(法)plain sleeve for taper shank普通锥柄套筒plain-type Horton spheroidplainclothes detection model便衣侦查模式plain galvanized steel sheet镀锌铁皮Plain Cost - Effectiveness粮食成本收益plain sedimentation property自然沉降特性

plain work平缝