细菌光密度的英文：
bacterial optical density
adj. 细菌的
bacterial isolate
分离菌
ear bacterial disease of maize
玉米穗细菌病
Cholera is a bacterial infection.
霍乱是一种细菌感染。
adj. 眼睛的，视觉的；光学的
Optical brightener(Optical brightness agent): Synonymous with Optical bleaching agent.
光学增光剂:即光学漂白剂。
Optical depth and optical path are often confused in the literature.
文献中光学厚度和光程时常混淆。
A computer that is made of optical fiber and various optical elements
一种利用传递光信号的光纤与各种光学元件相结合而制成的计算机。
n. 密集，稠密；密度
annual ring density
年轮密度
They will study the density of the stub.
他们会研究树桩的密度。
The entropy density is constant ahead of the shock.
冲击波前方的熵密度是恒定的。