单词 | measuring machine |
释义 | measuring machine [`mezh·ǝ·riŋ mǝ´shēn] ENGINEERING A device in which an astronomical photographic plate is viewed through a fixed low-power microscope with cross- hairs and which is mounted on a carriage that is moved by micrometer screws equipped with scales, in order to measure the relative positions of images on the plate. |
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