英语词汇“ppf”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	ppf
释义	ppf ['pi:p'i:'ef] [医][=pellagra preventive factor]抗糙皮病因子，维生素pp
随便看	roller coater roller coating roller coating enamel roller coating printing ink roller cold header roller comnveyor roller compacted concrete roller compacted concrete dam roller compaction roller compaction riveting press roller complement roller complement bore diameter roller complement outside diameter roller cone roller cone bit roller-cone core bit roller connecting rod roller contact roller contact bearing roller contact timer roller conveyer roller conveyer switch roller conveyer table roller-conveyor roller conveyor 水深不响，水响不深水深流慢，贵人语迟。水深激激，蒲苇冥冥。水深而浊，不如浅而清水深见长人。水深鱼极乐，林茂鸟知归。水深鱼聚水淹岸，淹不了树；淹了树，淹不了山水淹庄稼不淹草水淹洞穴的蚂蚁，有出没进不稂不莠不稳定平衡不穀不立文字不端不符不第不等不等价交换不等号