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单词 megger
释义

Meggern.

Brit. /ˈmɛɡə/, U.S. /ˈmɛɡər/
Forms: also with lower-case initial.
Origin: Probably formed within English, by clipping or shortening. Etymon: megohmmeter n.
Etymology: Probably shortened < megohmmeter n., although attested slightly earlier.
A proprietary name for: an instrument designed chiefly for measuring electrical insulation resistance. Frequently attributive.
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the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > instrument used in measuring
rheochord1864
Megger1903
multimeter1907
the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > non-conduction, insulation > [noun] > apparatus measuring resistance
Megger1903
Meg1923
1903 Trade Marks Jrnl. 2 Sept. 962 Megger... Electric testing apparatus..and scientific instruments.
1920 Whittaker's Electr. Engineer's Pocket-bk. (ed. 4) 282 Evershed's Megger. The Megger insulation testing set contains in one case a hand-driven magneto generator and a direct reading moving coil ohmeter.
1928 Naval Electr. Man. (Admiralty) I. ix. 204 The ‘Megger’ is a direct-reading ohmmeter for the measurement of high resistances, such as the insulation resistance wiring, etc.
1930 Engineering 31 Jan. 129/3 A demonstration model of their megger earth tester.
1957 G. Clark Archaeol. & Society (ed. 3) ii. 63 By using a ‘Megger’ Earth Tester, and measuring resistivity at intervals, it is possible to contour degrees of resistivity and so to detect areas of ancient disturbance, in the form of ditches.
1984 A. MacLean San Andreas i. 36 Engine-room, sir. Another malfunction. Both Jamieson and Third Engineer Ralson are on their way up with meggers.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022).
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n.1903
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