| 单词 | centre chisel |
| 释义 | > as lemmascentre chisel centre chisel n. now rare a cold chisel terminating in a point, originally used to mark the centre of a hole that is to be drilled; cf. centre punch n. ΚΠ 1872 Railroad Gaz. 16 Mar. 117/1 The holes should be chipped under with a center chisel in several places in order to hold the babbitt well. 1913 Amer. Marine Engineer July 38/1 Mr. Conklin was lying on his back..trying to fish it [sc. a set screw] out with a center chisel and hammer. 1960 Use & Care Handtools & Measuring Tools (U.S. Dept. of Army) iv. 143/1 When roundnose chisels are used to bring drilled holes, just started, concentric with the laid out drilling circles, they are called center chisels. < as lemmas |
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