hard seal

Cover with ring in it which fit into special hole make in sheet of paper

带特别孔的纸中装入带环眼的硬封皮

The hard cover of a book.

封皮纸板用作书封面的硬纸板

The software and hardware design of remotely controlled sealing and unsealing of plugging module

封堵模块遥控密封和解封的软硬件设计研究

She imposed herself as their leader.

她硬要自封为他们的头头。

Seat hardfaced with SS410 and seal welded.

配置410不锈钢和密封焊接的阀座硬面。

(of an insect pupa) enclosed in a rigid case.

（用于虫蛹）封闭在硬壳内的。

These are all intact units, unopened.

这些硬盘都是没有被用过没有开封的。

(of books) having a sturdy and attractive binding.

（指书）有坚硬的、吸引人的封面。

The boy had two short awkward letters from Ben.

这孩子来过两封措词生硬的短信。

Our customers are mainly from the automotive, medical and healthcare, home electronics and hard disk drive industries.

·硬盘电子设备和其他电子设备的精密密封垫圈。

A stiff, heavy paperboard used primarily for book covers.

书皮纸板一种硬而重的纸板，主要用作书籍封面

The presence of water containing hard particles presents a difficult problem for the sealing.

含有坚硬颗粒的水，给密封带来一个难题。

The Application of Rigid Polyurethane Cable Foam in Ship Cable Sealing

硬质聚氨酯泡沫塑料在船舶电缆密封上的应用

The Effect of Storage Time on the Hardness of Condensation-Type RTV Silicone Sealant

时间对缩合型RTV有机硅密封胶硬度的影响

Research and design of the metal seated ball valve in water-coal slurry working condition

水煤浆工况用硬密封球阀的研究与设计

Study of one-part polyurethane sealant with fast curing speed and high hardness

快固高硬度聚氨酯单组分密封胶的研究

Membraseal-type tubes are usually pierced open with a“ spike” cap of polythene or hard plastics.

破封型软管则经常配有聚乙稀或硬塑料制的“钉状”管盖以刺穿密封的管口。

The employer Used a lockout to break up the employee strike.

雇主为了压制雇员的罢工，采取了封闭工厂的（强硬）手段。