Gemi
abbr. grating efficiency measurement instrument 光栅效率测量设备
🗣️ 情景例句
I'll be married to Susan.
我就要和Susan结婚了。
The distinction of our product is its light weight.
我们产品的特点就是它很轻。
The basic features include a crest (the highest point of the wave),
它们的基本特征包括浪峰（波浪的最高点）