Diffractometers
(diffractometer 的复数) n. [光] 衍射计
🗣️ 情景例句
The only-child generation brings about many new social problems.
独生子女一代带来了许多新的社会问题。
Sorry to keep you waiting.
抱歉让你久等了。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
城里甚至还敷设了排水系统，因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。