stepped focusing magnet阶梯: a flight of stairs; ladder; ...型: mould; model聚焦磁铁: focus magnet; convergence ma ...聚焦磁铁: convergence magnet; focus magnet; focusing magnet弱聚焦磁铁: weak-focusing magnet下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:阶梯型聚焦磁铁，即可在微信中查询翻译
