| 释义 |
pupinized, ppl. a. Teleph.|ˈpjuːpɪnaɪzd|
[f. prec. + -ize + -ed1.]
Of a telephone cable: provided with loading coils at regular intervals, so as to reduce attenuation and distortion of the signal. (No longer current.)
1910Electrician 13 May 178/1 The attenuation coefficient determines the efficiency of any telephone circuit, and thus of a ‘pupinised’ circuit, so termed because it differs from an ordinary circuit by the introduction of inductance coils at definite points according to the formulæ of Prof. Pupin. 1913Sci. Abstr. B. XVI. 152 (heading) Design of pupinised metallic and phantom circuits. 1933Jrnl. R. Aeronaut. Soc. XXXVII. 463 Although great progress has been made in the construction of pupinised telephone cables, submarine telephony is still limited to relatively short distances, since intermediate amplifiers cannot be fitted. 1958New Scientist 9 Oct. 990/3 Born..100 years ago on October 4, Pupin was to leave his name perpetuated in a million ‘Pupin coils’, used in telephone lines known as ‘pupinised lines’. |