单词 | vertical illuminator |
释义 | vertical illuminator [`vǝrd·ǝ·kǝl i`lü·mǝ´nād·ǝr] OPTICS A microscope designed for observing surfaces of opaque substances such as metals, which has a mechanism for passing light down through the objective lens in order to illuminate the surface to be observed with a beam perpendicular to the surface. |
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