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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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