Further theoretical analysis indicates that there is a conversation law only when unitary transformation symmetry group exist.

进一步的理论分析表明，只有存在一个幺正变换对称群时，才有一个守恒定律。

youdao

The theoretic basis is chemical equilibrium theory including mass balance, energy and charge conversation law, and other thermodynamic considerations.

它的理论基础是化学平稳原理，包括质量平衡、能量守恒和电荷守恒定律，以及热力学上的其它一些考虑。

youdao

On the basis of experiments and the conversation law of optimal cutting temperature, the equation of maxim dimension tool life is derived and the relation parameters of the equation are also given.

在实验研究的基础上，推导了基于最佳切削温度守恒定律的刀具最大尺寸使用寿命方程并给出了相关参数。

youdao

Mr. STEVE HINCHMAN (Conversation Law Foundation): And as consumers realize, they have a choice to buy a clean car that's 20 to 50 percent more efficient, we're going to hit a tipping point where it will no longer make economic sense for Detroit to continue making the dirty version of the car.

NPR: States Push Automakers on Fuel Efficiency

The conference addressed the timely topic, Conquering Crime and Tackling Terrorism: Is There a Special Relationship? facilitating a fascinating conversation among high-level law enforcement officials from both the United Kingdom (UK) and the United States (US).

CENTERFORSECURITYPOLICY: Policing in an Age of Terror: Prevention is Best

U.S. officials learned after the bombings that Russian officials had intercepted a 2011 phone call between the suspect's mother, living in Dagestan, and one of her sons, in which they reportedly had a vague conversation about jihad, a law enforcement official told CNN earlier.

CNN: Suspect: Boston bombing was payback for hits on Muslims