sheaths
英 [ʃiːðz]
美 [ʃiθs]
n. (刀、剑等的)鞘; (工具的)套; 护套; 护层; 护皮; 紧身连衣裙
sheath的第三人称单数和复数
柯林斯词典
- (刀、剑的)鞘，套
Asheathis a covering for the blade of a knife. - 保险套;避孕套
Asheathis a rubber covering for a man's penis and is used during sex as a contraceptive or as a protection against disease.
双语例句
- Some cultural practices are required to keep these leaf sheaths active during ripening stage.
一些栽培技术要求在成熟期尽量保持叶鞘的活性。 - It does not show sheaths around the vascular bundles. Procambium ( procambial strand) The layer of cells that gives rise to the vascular tissue.
它并没有显示出在维管束周围的鞘状构造。原形成层（原形成层束）：形成维管组织的一层细胞。 - Their claws are kept sharp by being retracted into sheaths.
它们的爪子平时缩进皮鞘里，藉此保持锐利。 - Effect of different time of arterial sheaths extubation on incidence of hematoma in patients with coronary angiography
冠脉造影术后拔除动脉鞘管的时间与血肿关系观察 - Pathology.& Interstitial emphysema is characterized by air dissecting within the interstitium of the lung, typically in the peribronchovascular sheaths, interlobular septa, and visceral pleura.
其特征为空气夹在肺间质内，典型的位于血管支气管周围的鞘内、小叶间隔内和脏层胸膜内。 - Since the filaments that connect distant nerve cells are surrounded by fatty sheaths which restrict the movement of water, such molecules tend to move along a filament rather than out of it.
由于连接神经细胞的花丝被脂肪硝所包围，而脂肪硝会限制水分子的运动，所以水分子会沿着花丝运动。 - The hair is formed from cells just above the bulb, which also give rise to concentric zones of differentiated epithelial cells destined to form the inner and outer root sheaths.
毛球之上的细胞形成毛发，产生由分化的表皮细胞构成的同心环状区，形成内根鞘和外根鞘。 - But the official view was that the rods were still mostly intact – and radioactive material was safely contained inside their zirconium sheaths.
但官方的观点是，燃料棒大体上仍然保持完好，放射性物质仍然安全地包裹在燃料棒以锆制成的外壳之中。 - Tall grass with smooth bluish leaf sheaths grown for hay in the United States.
高草，叶鞘光滑带蓝色，在美国用作干草。 - Specifically, the insulating myelin sheaths around the axons of neurons the parts responsible for transmitting information to other neurons get smaller.
具体来说，神经元轴突周围的绝缘性髓鞘――负责将信息传送至其他神经元的部分――变小了。