periodic electrostatic focusing周期: period; cycle; circle; revol ...静电: static electricity; franklin ...聚焦: focus; focusing; concentrate双螺线双周期静电聚焦: bifilar helix biperiodic electrostatic focusing静电聚焦: electronstatic focusing; electrostatic focusing; static focusing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:周期静电聚焦，即可在微信中查询翻译
