阶梯折射率剖面光波导
step graded index lightguide
教学用光速仪
light velocity measuring instrument for teaching purpose
接触辉光放电等离子体
contact glow discharge electrolysis plasma
接收光天线
receiving optical antenna
接收机光连接器
receiver optical connector
节能日光温室
Solar greenhouse
energysaving heliogreenhouse
Economical energy sunshine greenhouse
接触辉光放电电解
contact glow discharge electrolysis
节能型日光温室
energy saving solar greenhouse
角锥形鼬尾镶饰人造丝光轧别丁绒大衣
mink tail trim pyramid coat in rayon sheen gabardine