单词 | through-hole |
释义 | > as lemmasthrough-hole through-hole n. Brit. , U.S. a hole that passes completely through an object; esp. (in later use) a hole of this kind in a printed circuit board, used as a means for attaching electronic components (frequently attributive).ΚΠ 1856 R. H. Dana Seaman's Friend (new ed.) 360 The sheaves, or wheels on which the rope runs, are grooved to receive the rope, and have in their centre, a brass or iron bush, with a through hole to receive the pin, on which the sheaves turn. 1965 in Precision Measurem. & Calibration: Sel. NBS Papers Mech. (1972) 300/1 The nozzles are sealed..by ‘Teflon’ ‘O’ rings, which are held in place by..stainless steel caps, each of which has a through hole and female pipe threads for the connection of tubing. 2014 A. Robinson et al. Raspberry Pi Projects viii. 183 Surface mount LEDs offer flatter and more even illumination than a through-hole part. < as lemmas |
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