Densography
X 射线照片密度检定法
🔁 扩展释义
【医】 [X线]底片密度检定法
🗣️ 情景例句
I type about 40 words per minute.
一分钟我能打40个字。
Wise men learn by other men's mistakes;fools by their own.
聪明人从旁人的错误中吸取教训，愚笨人则从自身的错误中吸取教训。
The sun will burn you if you're not careful.
要是你不当心，太阳会把你晒黑的。