conservationaladj.保存的;守恒的;;油封的
conservationn.保存;保护;守恒;节约
conservation felt polishing wheel防腐蚀毡抛光轮
conservation of absolute vorticity绝对涡度守恒
conservation of atmospheric energy大气能量守恒
conservation-oriented management节约型管理
conservation of historic buildings古建筑保护
Conservation-oriented government节约型政府
conservation water resource forest水源涵养林
conservation of moment of momentum动量矩守恒