单词	second control grid
释义	second control grid 第二控制栅级
随便看	hemispherical immersion lens hemispherical indent hemispherical integration hemispherical junction hemispherical lens hemispherical liner hemispherical liner with hole hemispherically hemispherical map hemispherical mirror hemispherical nose hemispherical perimeter hemispherical photography hemispherical projection of root of tougue hemispherical projection perimeter hemispherical pyrheliometer hemispherical-pyrheliometer hemispherical radiation hemispherical radiation properties Hemispherical reflectance Hemispherical Reflective Antenna hemispherical reflector hemispherical resistance wave instrument hemispherical reso nance gyroscope hemispherical resonant gyro