单词 | vertical linearity control |
释义 | vertical linearity control [`vǝrd·ǝ·kǝl ´lin·ē¦ar·ǝd·ē kǝn´trōl] ELECTRONICS A linearity control that permits narrowing or expanding the height of the image on the upper half of the screen of a television picture tube, to give linearity in the vertical direction so circular objects appear as true circles; usually mounted at the rear of the receiver. |
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