单词 | self-drilling |
释义 | > as lemmasself-drilling self-drilling adj. Brit. /ˌsɛlfˈdrɪlɪŋ/ , U.S. /ˌsɛlfˈdrɪlɪŋ/ designating a screw that does not require the drilling of a pilot hole, typically having a fluted tip that resembles a drill bit.ΚΠ 1904 Patents for Inventions: Abridg. Specif. Mechanism & Mill Gearing 194/2 Pulleys, collars, &c. are fixed to shafts by self-drilling pointed steel set-screws. 1961 Pop. Sci. Jan. 186/2 You need no starting hole to drive these self-drilling screws. 2006 Telegraph (Nashua, New Hampsh.) 24 Apr. 21 (advt.) There are also self-drilling screws available to make the job easier. < as lemmas |
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