通常按对应原理写出系统对易关系和量子运动方程时，未计及约束。
To our knowledge, the commutation relations and quantum equations of motion are given by using corresponding principle, it's not satisfactory since the constraints are ignored.
本文利用无穷小旋转与角动量之间的关系来推导角动量算符的对易关系。
By using the relation between unlimited rotation and angular momentum, this article derives the commutation relation of angular momentum operators.
如果你查阅这些早期的文献你将看到我们的风格大不相同，因为在我的工作里非对易关系是主导思想。
If you look up these early papers you will see that there is quite a difference in our styles, because in my work the noncommutation was the dominant idea.
结果表明 ，此问题取决于量子体系的状态 ，而与力学量算符可否对易问题有联系 ，但不构成因果关系 。
The question relates whether the operator of mechanical quantity can commute, but they don t form the causal relation.
日本研究人员对人的性格与体重指数之间的关系进行了探究，并发现性格外向的人容易，而焦虑不安的人则易瘦。
Outgoing people tend to be overweight, while anxious types are more likely to be thin, according to researchers who examined links between personality and body mass index.
日本研究人员对人的性格与体重指数之间的关系进行了探究，并发现性格外向的人容易，而焦虑不安的人则易瘦。
Outgoing people tend to be overweight, while anxious types are more likely to be thin, according to researchers who examined links between personality and body mass index.
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