Design and testing of these physical systems rely on standard design practices that employ the laws of conservation of force, mass, and energy.

这些物理系统的测试依赖于对作用力、质量和能量守恒定律的标准设计实践。

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Dipoles, Quadrupoles. Azimuthal Symmetry. Magnetostatics, Charge Conservation and Magnetic Force.

偶极，四极。方位角对称。静磁，带电量守恒及磁力。

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Have carried on research to electromagnetic force according to the law of conservation of energy.

依据能量守恒定律对电磁推力进行了研究。

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This week, the Latin Americans weren't prepared to yield anything because they believe they are right in trying to bring extra conservation measures into force, because they believe the world should be about saving whales, with hunting consigned to the past.

BBC: Whaling: Chaos or compromise?

Steve Hinchman, staff attorney for the Conservation Law Foundation in Maine, says this would force automakers to develop cleaner versions of most cars.

NPR: States Push Automakers on Fuel Efficiency

The task force was created to help implement research, monitoring, mapping, conservation, restoration and international measures to reduce human impacts on coral reefs.

CNN: Task force announces coral reef protections