| 单词 | surface contact |
| 释义 | > as lemmassurface contact surface contact n. (a) contact between two surfaces; (b) Engineering used attributively with reference to a system of electric traction in which the current is conveyed to a vehicle through conductors on the surface of the roadway which become live only when the vehicle passes over them (now historical). ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > conductor used in transport > [adjective] surface contact1897 1840 C. W. Williams Combustion of Coal i. vi. 115 The minimum, mean, and maximum effects of surface-contact are brought practically before us. 1897 U.S. Patent 589,786 1/1 My invention relates to electric railways operated by the well-known closed-conduit or surface-contact system. 1918 H. A. Foster Electr. Engineer's Pocket-bk. (ed. 7) 848 (caption) Diagram of connections for surface contact railway plate system. 1960 G. A. Glaister Gloss. Bk. 208 The ink is deposited on the paper by the lightest possible surface contact. 1988 D. Rees GCSE CDT—Design & Realisation xiii. 111 Because the Vee belt..has a larger surface contact with the pulley wheel, it will transmit larger loads. 2007 V. R. Vuchic Urban Transit Syst. & Technol. i. 17/2 Three main alternatives were explored: battery traction, continuous-contact conductors in underground conduit, and surface contact systems. < as lemmas |
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