| 释义 |
down lead Radio.
[down adv. 41.]
A wire that connects an elevated aerial or part of an aerial to a receiver or transmitter; a lead-in.
1913Work 23 Aug. 413/2 The aerial..should be at least 100 ft. to 150 ft., including down leads. 1925Harmsworth's Wireless Encycl. 729/1 Where the down lead enters the house care must be taken to secure perfect insulation. 1952E. A. Laport Radio Antenna Engin. i. 38 The antenna consists of a large elevated capacitance area with two or more down leads that are tuned individually. |