Ionna永纳ionn.离子ion-beam carving machine离子束雕刻机ionosphere focusing factor电离层聚焦因数ion exchange reflux system离子交换回流系统Ion Selective Micropipette离子选择性微量滴管Ion- selective electrode离子选择性电极ion exchange and transport离子交换Ionospheric irregularities电离层不规则体Ionospheric virtual height电离层虚高ion-acoustic fluctuation离子声起伏Ion beam mediated technique离子束介导技术