An instrument for measuring the opacity of a body or substance, esp. by measuring the amount of light it reflects.
单词 | θ80882 |
释义 | the world > matter > light > transparency or translucence > opacity > [noun] > degree of > measurement of > instrument (1) opacimeter1919 An instrument for measuring the opacity of a body or substance, esp. by measuring the amount of light it reflects. |
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