| 单词 | needle telegraph |
| 释义 | > as lemmasneedle telegraph needle telegraph n. now historical a telegraph in which the signals are given by deflection of a magnetic needle. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > types of field telegraph1795 enunciator1847 needle telegraph1847 indicator-telegraph1875 multiple telegraph1876 harmonic telegraph1878 Fullerphone1917 telecon1946 1847 Sci. Amer. 17 Apr. 236/3 Having these advantages, it must soon entirely supersede the old needle telegraph. 1860 G. B. Prescott Electr. Telegr. 100 The essential part of the needle telegraph is the multiplier. 1896 Harper's Mag. Oct. 730/1 Cooke..proposed a partnership, and the result was the joint patent for the needle telegraph. < as lemmas |
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