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- Through the discussions of the symmetries and conservation laws.This article provides reliable theoritical foundation for the study of certain conservation quantity or the physical equation. 本文通过对称性与守恒定律的讨论，探讨了某些物理守恒量或物理方程的理论基础。
- Strangeness is assumed to be a conserved quantity in all interactions that are not weak. 假定奇异性是除弱相互作用以外的所有相互作用中的一个守恒量。
- Starts with Kepler three laws,and an alyzes the conservational quantity in this kind of motion. 从开普勒三定律出发,分析这类运动中的守恒量。
- In your collaborations, always remember that “credit” is not a conserved quantity. 要知道，在合作中，荣誉不是一个定数。
- Based on Hamilton's variational principle,this peper proves that,for a system which is symmetric to some transformation there must be a conservative quantity. 本文从哈密顿变分原理（以下简称哈密顿原理）出发，讨论当一个系统存在某种对称性时，哈密顿原理便可给出此系统存在一个守恒量。
- Our community is a leader in the conservation of wildlife. 我们社区在野生动物保护方面走在前头。
- Who discovered the conservation of energy? 谁发现了能量守恒？
- Conservation is of the utmost importance. 保护自然资源至关重要。
- In our work quality counts for as much as quantity. 在我们的工作中，质量跟数量同等重要。
- Ifs cheaper to buy goods in quantity. 大量地购物要便宜些。
- time-dependent conserved quantity 含时守恒量
- generalized Hojman conserved quantity 广义Hojman守恒量
- Conservation methods will also help meet their energy needs. 能量保存方法也会有利于满足其能源需求。
- A quantity of unknown numerical value. 未知数数值不明的一个数量
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- Time, place, quantity and quality are categories. 时、空、质、量都是范畴。
- Quality often matters more than quantity. 质量往往比数量更重要。
- A concrete wall is built to stop silt from leaking to the conservation land. 一道水泥墙修筑起来，用以防止泥沙流进保留地。
- Mei Fengxiang.Lie symmetries and conserved quantities of holonomic systems with remainder coordinates. 张毅.;单面约束力学系统的基本理论研究:[博士学位论文]
- Most people have come to accept the need for conservation of natural resources. 现在大多数人已认识到保护自然资源的必要。
