| 单词 | field rheostat |
| 释义 | > as lemmasfield rheostat field rheostat n. Electrical Engineering a variable resistor for controlling the strength of an electromagnet in a motor or dynamo. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > controlling device or process > [noun] > rheostat > applied to field magnets field rheostat1888 the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > dynamo > [noun] > magnet > device controlling field rheostat1888 field regulator1889 1888 Proc. National Electric Light Assoc. 1887 478 Each dynamo should have its separate field rheostat to make up for any slight difference in speed of engines. 1938 Motion Picture Sound Engin. (Acad. Motion Pict. Arts & Sci.) viii. 119 Field rheostats for each motor are located in one place. 2005 S. J. Chapman Electric Machinery Fund. (ed. 4) ix. 627 The field rheostat is allowed to vary from 0 to 30 Ω. < as lemmas |
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