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单词 control zone
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control zone
control zone n. an area within which something, now esp. air traffic, is controlled, monitored, or regulated.
ΚΠ
1901 Jrnl. Trop. Med. 1 Apr. 120/1 In the [disease-free] control zone of Pontegalera, two persons who had acquired immunity..escaped infection.
1940 M. Tornich Radius Action Aircraft Appendix A 89 The airspace above an area within a 3-mile radius of the control airport is designated as a ‘Control Zone’.
1971 Abilene (Texas) Reporter-News 24 Oct. 10 a/4 Discussion is expected to center around control zone procedures and..pilot proficiency.
2000 Cutting Edge: Encycl. Adv. Technol. 262/2 Trains are assigned time slots..; this timing allows up to 20 trains to be tracked within each control zone.
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更新时间:2024/12/22 22:05:31