| 单词 | three-wire |
| 释义 | > as lemmasthree-wire three-wire adj. (a) applied to a system of distributing electric power, involving three mains and two dynamos, the two outer mains being joined to the free terminals of the dynamos, and the central main to a conductor joining the two; (b) applied to a system of mooring used to keep an airship or balloon at a constant height from the ground. ΘΚΠ society > travel > air or space travel > airfield or airport > [adjective] > at which airship may be moored > type of airship mooring three-wire1898 the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [adjective] > operated by mains electricity > specific system three-wire1898 1898 Westm. Gaz. 9 July 7/2 There was some discussion as to the particular kind of electrical equipment to be used, but eventually the three-wire system was adopted. 1933 N.E.D. Suppl. at Three Three wire mooring. 1934 J. A. Sinclair Airships in Peace & War ix. 186 Then came the three-wire system, which was first employed on the rigid airship No. 9 in 1917... To steady the bow, three wires were taken from the mooring point and attached to three bollards set in a triangle... A three-wire mooring was prepared at Pulham. < as lemmas |
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