sheath

noun

1. （刀、剑等的）鞘；（工具的）套
   a cover that fits closely over the blade of a knife or other sharp weapon or tool
2. 护套；护层；护皮
   any covering that fits closely over sth for protection
3. 护套；护层；护皮
   any covering that fits closely over sth for protection
4. 紧身连衣裙
   a woman's dress that fits the body closely

1. (刀、剑的)鞘，套
   A sheath is a covering for the blade of a knife.
2. 保险套;避孕套
   A sheath is a rubber covering for a man's penis and is used during sex as a contraceptive or as a protection against disease.

1. He drew his sword from its sheath.
   他拔剑出鞘。
2. She appears wearing a magenta silk sheath dress by Jason wu, who also designed her inaugural gown.
   在封面照上，米歇尔身穿一袭由设计师吴季刚为其设计的绛红色紧身丝质裙装。她在奥巴马就职典礼上所穿的礼服就出自吴季刚之手。
3. All the results demonstrated pyrenoid and starch sheath were closely related with photosynthetic function.
   这些结果均表明条浒苔蛋白核（淀粉鞘）单细胞绿藻的蛋白核相同，具有光合作用功能。
4. Lead in sheath heater of Microwaves.
   微波炉发热器护套中的铅。
5. The productuses 4 pairs, Insulation is HDPE insulator, and sheath is PVC.
   1本产品规格为4对，绝缘采用高密度聚乙烯绝缘料，护套为聚氯乙烯护套料。
6. Losses in cable sheath and armor were moved into cable conductor by thermal circuit method.
   利用热路的方法将电缆金属套损耗和铠装层损耗归算到电缆导体。
7. A sheath for a sword or dagger or bayonet.
   剑、匕首或刺刀的鞘。
8. Relating to or resembling a sheath.
   鞘的与鞘有关的或鞘状的。
9. The cells of leaf bundle sheath contain numerous chloroplasts and starch grains.
   叶的维管束鞘细胞含有许多叶绿体和淀粉粒，可以断定它是四碳植物。
10. Objective Research on domestic sheath autonomous formula and its application on SE-9000 automatic blood instrument.
    目的研究国产鞘液的自主配方及其在SE-9000全自动血液分析仪上的应用。
11. Objective: To study the morphological changes of tissue engineering synovialized tendon after transplanted within the flexor digital sheath.
    目的：观察用组织工程学方法形成的滑膜化肌腱鞘内移植后的形态变化。
12. A protective sheath enclosing the shoot tip and embryonic leaves of grasses.
    胚芽鞘裹在草的芽尖和胚芽外层的保护鞘。
13. The results supported that rice resistance to sheath blight was a hereditable character and selection to resistance was effective.
    表明水稻对纹枯病的抗性是可遗传的性状，对抗性的选择有效。
14. Effect of elastic modulus of stratum and cement sheath on casing strength
    地层和水泥环弹性模量对套管强度的影响分析
15. It shows one sheath around the vascular bundles.
    它显示出在维管束周围的鞘状构造。
16. Mainly applied in cracking resistant sheath of communication cable, control cable and power cable.
    主要用于通信电缆，控制电缆和电力电缆的护套层。
17. He lowered it and drew his hunting-knife from its beaded sheath at his hip.
    他放下枪，从屁股后面的镶珠刀鞘里拔出猎刀。他一刀砍下去，砰的一声，把刀子都震飞了。
18. A white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers.
    一种白色油脂物质，形成一些神经纤维轴突外包裹的一层髓鞘。
19. In this paper, the establishment of the standard for the cables for wind power generation, design of the conductor construction and selection of the materials for insulation and sheath are presented.
    文中介绍了风能发电用电缆标准的制定、导体结构的设计，以及绝缘和护套材料的选择，最后还介绍了几项特殊性能试验方法及要求。
20. He found a wood-and-leather sheath that fit and slipped the dirk inside.
    他又找到了一个皮木做的合适刀鞘然后将匕首插了进去。
21. It was shown in the populations that the apiculus coloration matched to basal leaf sheath coloration in each plant.
    在各个植株上，稃尖颜色和叶鞘颜色的表现完全相同。
22. The external sheath of connective tissue surrounding a muscle.
    肌外衣包围肌肉的连结组织的外鞘。
23. In this paper, sheath scaling for PIII into a spherical target is investigated using numerical methods.
    本文对球形靶的鞘层尺度进行了数值求解、讨论了注入参数对鞘层尺度的影响。
24. Would you be his sheath?
    你愿意当一个刀鞘吗？
25. At the same time, sheath of polyolefin processing performance and prone to defects and discussed how to resolve.
    同时也对聚烯烃护套的性能和加工容易出现缺陷及如何解决进行了论述。
26. Another key factor is the insulating fatty sheath encasing neuron fibres, which affects the speed of electrical signals.
    另一个关键的因素在于围绕神经纤维的隔离脂肪鞘，它能影响电信号的速度。
27. Minmum thickness of sheath and maximum overall of cable refer to Table 3.
    终端电缆的护套最小厚度和电缆最大外径见表2。
28. Objective: To investigate the effects and safes of ultrasound-assisted liposuction by the probe with the sheath.
    目的：探讨带有外鞘的超声探头吸脂术的安全性和有效性。
29. Objective: to provide anatomic data for treatment of thoracic nerve root sheath diseases.
    目的：为临床胸神经根鞘性疾患的诊治提供解剖学基础。

noun

1. a dress suitable for formal occasions

   Synonym:    cocktail dress

2. a protective covering (as for a knife or sword)

3. an enveloping structure or covering enclosing an animal or plant organ or part

   Synonym:    case