SAC

英

美

abbr. 南方空军司令部（南非）(Southern Air Command)

复数：sacs　

Collins.1 / BNC.16085 / COCA.17836

牛津词典

noun

（人、动植物体内的）囊，液囊，气囊
a part inside the body of a person, an animal or a plant, that is shaped like a bag, has thin skin around it, and contains liquid or air

N-COUNT (动物体内的)囊，液囊，气囊
Asacis a small part of an animal's body, shaped like a little bag. It contains air, liquid, or some other substance.
1. The lungs consist of millions of tiny air sacs.
  肺由数百万个小气囊组成。

This shaft have overcome the problems which a single air sac of a traditional one existence.
这种轴克服了传统气胀轴单一气囊所存在的问题。
Embryo sac and embryo development and embryo rescue in Lilium distant cross
百合远缘杂交的胚囊和胚胎发育及胚拯救
Three pregnant uterus can be open and add to simulated gestation sac;
三个怀孕子宫都可以打开，放入模拟妊娠囊。
The chorion and amnion are foetal membranes that contribute to the placenta and the foetal sac respectively.
绒毛膜和羊膜是分别形成胎盘和羊膜囊的胎膜组织。
In the first method, one drop of this dilution is dropped into the conjunctival sac.
第一种方法是将一滴这种稀释液滴入结膜囊。
ObjectiveTo study the effects of glycyrrhizin on intestinal absorption of paeoniflorin by the everted rat gut sac model.
目的研究甘草酸对芍药苷大鼠肠吸收的影响。
Pollen tube entered the embryo sac via one synergid and in it released two sperms.
花粉管经由一个助细胞进入胚囊，并在助细胞中释放两个精子。
The sac is very strong, like a balloon filled with water.
这个囊很结实，就像是装了水的气球。
Study of Antibiotics and Conjunctival Sac Wash Before Cataract Surgery
白内障患者术前使用抗生素和结膜囊冲洗的临床研究
These abnormalities would cause the abnormal structure of mature embryo sac.
这些异常可能最终导致多种结构异常成熟胚囊的形成。