“symmetrical alternating quantity”的概念、定义、翻译、参考文献-科学参考

单词	symmetrical alternating quantity
释义	symmetrical alternating quantity [sǝ`me·trǝ·kǝl `ȯl·tǝr´nād·iŋ `kwän·ǝd·ē] ^PHYSICS Alternating quantity of which all values separated by a half period have the same magnitude but opposite sign.
随便看	color throw color-translating microscope color transmission color triangle color vision Colossendeidae colostomy colostrum colotomy Colpitts oscillator colposcope colposcopy colpotomy colter Colubridae Columba Columbidae Columbiformes columbite columbium columella column columnar epithelium columnar ionization columnar jointing

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