英语词汇“hard iron”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

a. Of a magnetizable material: highly resistant to being demagnetized (as hard iron).

ΚΠ

a1737 J. Hutchinson Glory or Gravity: 2nd Pt. in Philos. & Theol. Wks. (1749) XI. 341 Soft Iron will not attract the Filings of Iron after it is touched, but hard Iron will.

1801 Encycl. Brit. Suppl. II. 149/2 When the north pole of a weak but hard magnet is set on the north pole of a strong one, it must certainly repel part of the fluid to the other end, and thus it must weaken the magnet.

1852 Jrnl. Franklin Inst. July 68 A very hard magnet,..when under the influence of another of double its power, was not sensibly affected either way.

1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) II. 44 Iron which retains its magnetic properties when removed from the magnetic field is called Hard iron.

1958 Billboard 17 Feb. 30/4 These oxides are magnetically hard.

1993 L. S. Lerner Physics for Scientists & Engineers II. ix. 763 One way to make a permanent magnet is to heat a bar of magnetically hard material to redness and then let it cool in the presence of a strong magnet.

2009 B. D. Cullity & C. D. Graham Introd. Magn. Materials (ed. 2) i. 18 Sometimes the same material may be either magnetically soft or hard, depending on its physical condition.

2013 J. T. Shipman et al. Introd. Physical Sci. (ed. 13) viii. 213 Hard iron is used for permanent magnets such as bar magnets.

单词	hard iron
释义	> as lemmas hard iron a. Of a magnetizable material: highly resistant to being demagnetized (as hard iron). ΚΠ a1737 J. Hutchinson Glory or Gravity: 2nd Pt. in Philos. & Theol. Wks. (1749) XI. 341 Soft Iron will not attract the Filings of Iron after it is touched, but hard Iron will. 1801 Encycl. Brit. Suppl. II. 149/2 When the north pole of a weak but hard magnet is set on the north pole of a strong one, it must certainly repel part of the fluid to the other end, and thus it must weaken the magnet. 1852 Jrnl. Franklin Inst. July 68 A very hard magnet,..when under the influence of another of double its power, was not sensibly affected either way. 1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) II. 44 Iron which retains its magnetic properties when removed from the magnetic field is called Hard iron. 1958 Billboard 17 Feb. 30/4 These oxides are magnetically hard. 1993 L. S. Lerner Physics for Scientists & Engineers II. ix. 763 One way to make a permanent magnet is to heat a bar of magnetically hard material to redness and then let it cool in the presence of a strong magnet. 2009 B. D. Cullity & C. D. Graham Introd. Magn. Materials (ed. 2) i. 18 Sometimes the same material may be either magnetically soft or hard, depending on its physical condition. 2013 J. T. Shipman et al. Introd. Physical Sci. (ed. 13) viii. 213 Hard iron is used for permanent magnets such as bar magnets. extracted from hardadj.n. < as lemmas
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> as lemmas