家庭清洁手套
gloves for household purpose
骨科手术手法
Orthopaedics operative methods
膝关节置换术：手术舒缓痛楚
knee replacement: surgery can relieve pain
医用手术手套
surgical operation gloves
《清洁生产促进法》
Law of the Peoples Republic of China on Promotion of Cleaner Production
VES-50清洁压裂液
VES-50 cleaning fracturing fluid
安全壳空气清洁系统
containment air cleaning system
安全清洁的核电
Safe and clean nuclear power