Gravitometer
重差计(测定比重用)
🏥 医学释义
比重计，比重测定器
🗣️ 情景例句
You really must try and take more care.
你一定要更当心一点。
One butcher does not fear many sheep.
屠夫不怕羊多。
David Hall,83, Bridge Street.
大卫。霍尔，大桥街83号。