封底,back cover
1)back cover封底
1.Extra large body of bridge bears the whole main bearing foundation of structure of bridge, service life and security of the whole bridge of back cover quality relation of the foundation pit.特大型桥梁的锚体或承台都是全桥的主要承重结构的基础 ,基坑的封底质量关系全桥的使用寿命和安全。
2.That steel hook box cofferdam is that provision design of the hinders water structure for slab foundation construction,whose effect is by the side and the back cover concrete on bottom board or bottom board of the steel hook box cofferdam surrounding water to provide the anhydrous trunk body work environment for slab foundation construction.钢吊箱围堰是为承台施工而设计的临时阻水结构,其作用是通过钢吊箱围堰的侧板和底板或底板上的封底混凝土围水,为承台施工提供无水的干体作业环境。
英文短句/例句

1.Fourth cover: Outside back cover of a periodical.封四:期刊的封底
2.Back cover: The sheet covering the end of a book.封底:书本的最后一面。
3.The price of a book is usually inside the front cover or on the back cover.书价通常印在封面内或封底上。
4.Indicates back or backing. Use in conjunction with a groove symbol.指示底焊或封底焊。与沟符号一起使用。
5.a blank leaf in the front of back of a book.书籍封底前的一张空白页。
6.Either of the folded ends of a book jacket that fit inside the front and back covers.向内折的边书籍护套折进封面或封底的折叠端的任一端
7.The Utilization of Caission in the Project of Syria Shipyard of Underwater Terra Term封底套箱在叙利亚船坞下水滑道工程中的应用
8.I shall write to you again at the end of the month.我月底给你再写一封信.
9.semipacked bottom-hole assembly半封隔井底钻具组合
10.through sheer mischance the letter remained unread.经由如此彻底的不幸这封信仍未被读。
11.There will be no ceiling or floor in giving Bonuses to the employees对员工的奖金实行上不封顶,下不保底
12.Oil pan timing case cover seal油底壳与正时齿轮盖油封
13.The chemist was thorough in his analysis of the substance.这位化学家封此状之作了彻底的分析。
14.Mr Bush's veto does not kill stem-cell research.布什的否决没有彻底封杀干细胞研究。
15.They attempted to exterminate feudalism他们要彻底消灭封建主义。
16.Feudal ideas must be eradicated.封建主义的思想必须彻底肃清。
17.The library is expected to top out by the end of this year博物管可望年底前结构封顶
18.practice of imposing “no ceiling or lower limit”“上不封顶, 下不保底” 的办法
相关短句/例句

bottom sealing封底
1.With reference to the design and construction of steel boxed cofferdam used at mid-river shoal for the Shengmi Bridge in Nanchang, this paper presents the design process of the single-wall, bottomless huge steel boxed cofferdam, and analyzes in details the construction difficulties of changing of the guiding trusses, internal bracings, sinking and bottom sealing of the cofferdam.结合南昌生米大桥江心滩套箱的设计与施工,介绍大型单壁无底钢套箱的设计,对其中的导向架、内支撑转换、套箱下沉与封底的施工难点进行了重点分析。
2.The design and construction technology for rubble grouting concrete of the open caisson wall and of the bottom sealing at the anti impact island of the auxiliary shipping channel of Humen Bridge were introduced,and the economic benefits of adopting the grouting concrete were analyzed in this paper.主要介绍了虎门大桥辅航道防撞岛沉井井壁片石压浆混凝土和封底片石压浆混凝土施工设计与施工工艺,并分析了压浆混凝土的经济效益。
3.In this paper,the construction techniques for the bottom sealing are dealt with.南京大胜关长江大桥主桥8号墩基础采用吊箱围堰施工,吊箱围堰平面尺寸大,分仓多,结构复杂,水下混凝土封底难度大。
3)subsealing封底
1.Combined with practical engineering of sinking well in underground drainage pumping station in Xinlan road,Taiyuan city,the author introduces its hydro-geological conditions,illustrates structural design elements of sinking well and attentions in the design,and analyzes relevant problems in correcting sinking deviation and subsealing construction,which to offer a reference for similar projects.结合太原市新兰路地下雨水泵站沉井的工程实例,对其水文地质条件进行了介绍,并对沉井结构设计要点和设计中的注意事项进行了阐述,最后对下沉纠偏及封底施工中的相关问题进行了分析,供类似工程参考借鉴。
4)floor sealing封底
1.Construction practice proves that clip insert plate may effectively save the volume of blasting under water, reduce the leakage of floor sealing concrete, and accelerate the construction of foundation in water.施工实践表明 ,采用扣式插板能有效减少水下爆破工程量 ,降低封底混凝土施工堵漏难度 ,加快水中基础施工进度 ,是一种快速、安全的方法。
5)underseal['?nd?si:l]底封
6)cover and back封面封底
延伸阅读

封底书刊的背面,跟封面③相对的一面。也叫封四。