[物理] 绕射栅格、光学; 衍射光栅，绕射光栅，光学 optical grating: 光栅digital optical grating micrometer: 数字式光栅测微仪one-diffraction optical grating: 一维光栅optical diffraction grating: 光学衍射光栅optical grating measuring system: 光栅测量系统下载手机词典可随时随地查词查翻译
