aligned grid tubealigned grid valvealigned-grid tubealigned-grid valve栅极: grid; grid electrode校直: align; aline; straighten; al ...的: 4次方是 The fourth power of 2 i ...电子管: electron tube duct; canal; v ...栅极中点校直的电子管阀: aligned grid valve下载手机词典可随时随地查词查翻译