sac是什么意思？

sac

英[sæk] 美[sæk]

• n. （动植物组织中的）囊，液囊；
• abbr. 缩写 = (US) Strategic Air Command 战略空军司令部。；

复数：sacs;

例句

• water sac 水囊
• renal sac 肾囊
• juicy sac 汁囊
• Starch grains present in the embryo sac and placenta are utilized by the embryo. 存在于胚囊和胎座中的淀粉粒为胚胎所利用.
• The heart sounds are muffled when the pericardial sac is distended with fluid. 当心包充满液体时心音减弱.
• Others are born live , after struggling to break free from a membranous egg sac. 其余的是冲破膜状蛋囊而出生的.
• The chalazal megaspore of a linear tetrad develops into a polygonum type sac. 四分体线行排列,合点端的大孢子发育为蓼型胚囊.
• Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type. 大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.
• Black Lambskin Leather small hand bag pouch sac New! 黑色羊皮皮革小手包零钱包国资委全新!
• Results Bad technical skill, preoperative intraorbital inflammation and conjunctival sac crispation were disadvantages to prognosis. 结果工艺质量较差的羟基磷灰石眼座, 术前眶内存在炎症及结膜囊挛缩均影响预后.

柯林斯高阶英汉双解学习词典释义

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

英汉词典释义

• n.
  (动植物组织中的)液囊
  juicy sac 汁囊 renal sac 肾囊 water sac 水囊

英英词典释义

• Noun
  1. an enclosed space;
  "the trapped miners found a pocket of air"
  2. a case or sheath especially a pollen sac or moss capsule
  3. a structure resembling a bag in an animal

行业词典

• 医学： 囊：袋状器官或结构；