外部膜的英文：
outer membrane
adj. 外面的，外部的；客观外界的
bearing outer race
轴承外座圈
He disclosed the outer covering on the bike.
他揭去自行车上的覆盖物。
He heard a voice in the outer room.
他听到外屋有人说话。
Emotion is our response to the outer stimuli.
情绪是我们对外界刺激的回应。
The outer skin of the orange is called the 'zest'.
橙子皮称为zest。
n. 膜，薄膜
This membrane is semi-permeable.
这层膜是半渗透性的。
The basis for membrane separations is the difference in permeability of a semiporous membrane to different molecular sizes.
膜分离技术的基础是不同大小的分子对半渗透膜渗透性不同。
The sarcoplasmic reticulum is a system of intracellular membranes
肌浆网属于细胞内膜系统。
renal dialysis membrane leak detector
肾透析膜渗漏检出器
The fluid in the membranous labyrinth of the inner ear.
内淋巴耳内部膜质内耳中的水样液