单词:helmholtz-coil phase-shifting circuit
亥姆霍兹线圈移相电路
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AMERICANMOSAIC-ChicagoArchitectJeanneGangNamedMacArthurFellowforherStriking DOUG JOHNSON: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) Im Doug Johnson. Today we listen to new music from the Red Hot Chili Peppers And we visit an unusual
发表于:2018-12-16 / 阅读(52) / 评论(0)
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