恪守合作理念 strict observance of principles

自守理论 [数] automorphic theory

能量守恒原理 [物] principle of conservation of energy ; energy conservation principle ; conservation of energy principle

质量守恒原理 [物] principle of mass conservation

动量守恒原理 principle of momentum conservation ; principle of conservation of momentum ; principle of momentum of momentum ; conservation of momentum principle

保守性管理 defensive management

守恒原理 conservation principle ; principle of conservation

守恒定理 conservation theorem

守法心理学 law-abiding psychology