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单词 solid system
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solid system
solid system n. Electrical Engineering a system of cable-laying in which insulated cables are laid in a trough which is then filled with bitumen.
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the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [noun] > cable > laying below ground > system of laying
solid system1891
1891 Electr. Engineer 30 Jan. 121/2 In the Callender Solid system the insulated cables are laid in an iron trough and the whole filled in solid with melted bitumen.
1898 Electr. Engin. (Chicago) July 2 The first and simplest is the ‘solid’ or ‘built-in’ system, where wires, which are insulated thoroughly and thoroughly protected from mechanical disturbances, are buried in the ground.
1920 Whittaker's Electr. Engineer's Pocket-bk. (ed. 4) 352 The B.O.T. raise no objection to the omission of the copper tape on unarmoured cables laid on the solid system; a great deal of such cable is in use without any leakage trouble.
1953 C. C. Barnes Power Cables xv. 154 The solid system is more expensive than burying cables direct in the ground and requires a greater measure of skilled supervision and favourable weather conditions... For the above reasons the solid system is seldom used today.
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