| 单词 | bottoming tap |
| 释义 | > as lemmasbottoming tap bottoming tap n. Mechanics a tap (tap n.1 4) which has little or no taper, used for cutting an internal thread uniformly to the bottom of a hole. ΘΚΠ society > occupation and work > equipment > machine tool > other specific machine tools > [noun] > machine for cutting screw-threads > taps screw tap1678 tap1678 plug tap1815 tap-tool1874 bottoming tap1875 taper tapa1877 second tap1888 1875 E. H. Knight Amer. Mech. Dict. III. 2495/1 Bottoming tap. 1943 Sci. & Mech. Spring 119/1 The most commonly used one is the plug tap and the least used is the bottoming tap. 2014 T. Denton Automotive Technician Training iv. 59/1 The bottoming tap has a continuous cutting edge with almost no taper. < as lemmas |
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