| 单词 | proving machine |
| 释义 | > as lemmasproving machine C1. General attributive (chiefly in sense 3), as proving flight, proving machine, etc. ΘΚΠ society > travel > air or space travel > [noun] > a flight through air or space > to test aircraft proving flight1573 test flight1912 shake-down flight1939 1573 R. Lever Arte of Reason iii. iv. 104 The three termes..be thus named: the generall terme; the speciall terme: the prouing terme: eche terme being twice repeted in one reason. 1821 Times 28 Mar. 4/1 This form of link was supported by Captain Brown, even after the existence of the proving machine. 1858 P. L. Simmonds Dict. Trade Products Proving-press, an apparatus for testing the strength of iron girders, and other castings, by pressure. 1875 E. H. Knight Amer. Mech. Dict. III. 1812/1 Proving-machine, one for testing the resistance of springs or the strength of materials. 1948 ‘N. Shute’ No Highway i. 28 They did a whole lot of proving flights over the route before they put it into regular operation. 1971 M. Lee Dying for Fun ix. 55 All over his desk were scattered invitations—art galleries, press conferences..air trips and proving flights. 1992 RS Components: Electronic & Electr. Products July 1130/2 A proving unit able to provide a 240 V d.c. output to prove the integrity of neon type test lamps and voltage indicators. < as lemmas |
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