单词 | filar micrometer |
释义 | filar micrometer [`fī·lǝr mī`kräm·ǝd·ǝr] DESIGN ENGINEERING An instrument used to measure small distances in the field of an eyepiece by using two parallel wires, one of which is fixed while the other is moved at right angles to its length by means of an accurately cut screw. Also known as bifilar micrometer. |
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