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单词 delay action
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delay action
delay action n. an action that is delayed for a particular purpose; a device that acts after a period of time has elapsed; = delayed action n.Chiefly as a modifier.Frequently with reference to shells and aerial bombs designed to explode some time after they have landed.
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the world > time > a suitable time or opportunity > untimeliness > delay or postponement > [adjective] > delay action
delayed action1836
delay action1879
1879 Man. Siege & Garrison Artillery Exercises ii. 51 (heading) Delay Action for base of Battering Shell.
1939 Pop. Mech. Nov. 671 A delay action circuit is incorporated so that the photocell must remain in the shadow a predetermined length of time before the mechanism will go into action.
2016 I. Jones London: Bombed, Blitzed & Blown up xiii. 231 From observations made by bomb disposal personnel it was further established that of 154, 250kg bombs dropped with delay-action fuzes, 52.8% detonated within eight hours, 65% within twelve hours and 75% within fifteen hours.
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