| 单词 | secondary standard |
| 释义 | secondary standard [`sek·ǝn´der·ē `stan·dǝrd] PHYSICS 1. A unit, as of length, capacitance, or weight, used as a standard of comparison in individual countries or localities, but checked against the one primary standard in existence somewhere. 2. A unit defined as a specified multiple or submultiple of a primary standard, such as the centimeter. |
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