| 单词 | physical quantity |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔conservation〕The maintenance of a physical quantity, such as energy or mass, during a physical or chemical change.守恒：在物理或化学变化过程中能量或质量等物理数量的维持原状美国传统〔gradient〕Physics The rate at which a physical quantity, such as temperature or pressure, changes relative to change in a given variable, especially distance.【物理学】 梯度：一个物理量，如温度或压力，相对于另一给定可变量（尤指距离）的变化的变化率美国传统〔quantum〕The smallest amount of a physical quantity that can exist independently, especially a discrete quantity of electromagnetic radiation.量子：物理量中可独立存在的最小的量，尤指电磁辐射中不连续的量美国传统 |
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