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

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。
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。
Plants with a mild phenotype formed normal leaf sheaths and blades, but lacked ligules and showed diffusion of the blade – sheath boundary.
轻度的植株能有正常的叶及叶鞘，但没有叶舌，叶与叶鞘的边界弥散。
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。
The proportion of N was significantly higher in the culms and sheaths, whereas significantly lower in the grains, under dry cultivation than under SC.
旱种稻成熟期茎鞘中的N素分配显著高于对照，籽粒显著低于对照，品种间叶片有所不同。
Histochemical analysis and in situ hybridization showed that the ACO1 expression was localized in the basal parts of leaf sheaths immediately above nodes or the lower parts of elongating internodes.
组织化学分析和原位杂交结果表明ACO1在伸长中的节间底部仅靠近节的叶鞘基部表达量很高。
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。
Sedges having dense spikes of flowers and leaves reduced to basal sheaths.
莎草科的一个属，花排列成紧密的穗状花序，叶退化成基生的鞘。
In short, Knox's proposal was ill conceived and naively made. It does not show sheaths around the vascular bundles.
总而言之，诺克斯的建议考虑不周，显示幼稚。它并没有显示出在维管束周围的鞘状构造。
Mechanical and physical performances of the sheaths meet related standards;
护套的机械物理性能满足相关标准的要求；