Apertometer
数值孔径计, 数值口径计, 物镜口径计, 开角机
🔁 扩展释义
【医】 物镜口径计
🗣️ 情景例句
A little over two hours.
两个钟头多一点。
I've got a pain in my back.
我的后背有点疼痛。
When it has been decided where we are going to drill, we put up at the surface an oil derrick.
当确定钻孔地点后，我们就在那里竖起一个井架。