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
Thanks, Richard.
谢谢 ，Richard。
That was a close call! We nearly hit that car.
真是好险阿，我们差点撞着那辆汽车。
The currents of air that the walls of the ship direct upwards, as well as in the line of its course, are enough to give the great bird with its immense wings sufficient sustenance and progress.
沿船体的上升的气流和沿航线向前的气流给这种巨翼大鸟以足够的浮力和推力。