常見例句Keywords space welding;equi-diametral three-cylinder electrostatic unipotential lens;CAD; 空間銲接;等逕三圓筒單透鏡;計(jì)算機(jī)輔助設(shè)計(jì);Keywords spac e welding;equi-diameter three-cylinder electrostatic unipotential lens;CAD; 空間銲接;等逕三圓筒單透鏡;計(jì)算機(jī)輔助設(shè)計(jì);unipotential emittig surface 等電位發(fā)射麪unipotential cathode 等電位隂極unipotential electrostatic lens 單電位靜電透鏡 返回 unipotential