| 单词 | duplex punch |
| 释义 | > as lemmasduplex punch duplex escapement, one in which the escape-wheel has both spur and crown teeth; duplex gas-burner, one having two jets so arranged as to combine the two flames into one; duplex lamp, one with two wicks; duplex lathe, one having a cutting-tool at the back opposite to that in front, and in an inverted position; duplex process, a process for making steel in which the charge undergoes treatment by two of the standard processes or in two furnaces in succession. duplex punch (a) a punch having a counter die on the opposite jaw; (b) one whose force is derived from the rolling action of two levers on a common fulcrum.extracted from duplexadj.< as lemmas |
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