### equivalence

• n. 等值；相等
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1、equi- "equal" + val- "be well, be worth" + -ence.
equivalence (n.)
1540s, from French équivalence, from Medieval Latin aequivalentia, from Late Latin aequivalentem "equivalent" (see equivalent). Related: Equivalency (1530s).
1. Nuclear physics has provided extensive experimental support for the mass - energy equivalence.

2. The midpoint and equivalence point for carbonic acid are much higher.

3. This verifies the equivalence of pure shear and simple shear.

4. The mass - energy equivalence has been amply confirmed.

5. In fact, we shall use the same notation for word and its equivalence.