| 单词 | tapper-back |
| 释义 | > as lemmastapper-back 2. That which taps or lightly strikes, as a hammer for striking a bell; spec. a key in an electric telegraph which is depressed (with a tapping sound) to complete the circuit, a telegraph key; in wireless telegraphy, a device for restoring the filings to their original condition; also tapper-back. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > other specific parts armOE button?1561 running gear1663 relax1676 collar1678 drumhead1698 long arm1717 drum1744 press cloth1745 head1785 absorber1789 bearing plate1794 crown1796 rhodings1805 press box1825 alternator1829 cushion1832 saw tooth1835 shoe1837 keyboard1839 returner1839 cross-head1844 channel shoe1845 baster1846 water port1864 shifter1869 magazine1873 entry port1874 upsetter1875 mechanism1876 tapper1876 tension bar1879 buttonholer1882 take-up1884 auger1886 instrument panel1897 balancer1904 torsion bar1937 powerhead1960 society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > transmitter > key telegraph key1848 Morse key1858 tapper1876 1876 W. H. Preece & J. Sivewright Telegraphy 43 There are two forms of the single needle instrument in general use, viz. the drop-handle and the pedal or tapper form. 1876 W. H. Preece & J. Sivewright Telegraphy 47 The sending portion of the ‘pedal’ or ‘tapper’ form of single needle. 1898 Edinb. Rev. Oct. 306 The restoration to the coherer of its defective efficacy is brought about by the automatic action of a ‘tapper’. 1903 Sci. Amer. 26 Dec. 483/2 In 1894 he [Sir O. Lodge] exhibited at Oxford his first ‘tapper-back’, or automatic system of decohering the iron filings after each impulse. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。