抗震等级的英语

一、hb（布氏硬度）

硬度表示材料抵抗硬物体压入其表面的能力。它是金属材料的重要性能指标之一。一般硬度越高，耐磨性越好。

二、hb（系统简称）

HB版（电脑）：指家庭普通版 Home Basic。如Windows Vista HB就是vista家庭普通版。

三、hb（行业标准）

HB：航空标准；例如：HB 1-221-2002 《中华人民共和国航空行业标准 半圆头螺钉》。

四、hb（建筑工程术语）

例如： 梁端加密区（抗震等级Ⅰ 级）长度≥max(2 hb,500)

梁端加密区（抗震等级Ⅱ、 Ⅲ、Ⅳ级）长度≥max(1.5hb,500)

其中 hb=梁高

五、hb（织物测试）

HB级: 水平燃烧测试 Horizontal Burning Test 。塑料纺织织物水平方向燃烧性能测定。

六、hb（汽车分类）

HB：两厢Hatchback

所称的掀背式、斜背式、快背式和溜背式。这种车的后背可以向上掀起，因此可以装载比较大的物件，车身形状有利于气流快速流过车背，气流到车后部时不至过早分流而产生涡流，从而可减小空气阻力。

参考资料来源：百度百科-HB（布氏硬度）

参考资料来源：百度百科-HB（系统简称）

参考资料来源：百度百科-HB（行业标准）

参考资料来源：百度百科-HB（建筑工程术语）

参考资料来源：百度百科-HB（织物测试）

参考资料来源：百度百科-HB（汽车分类）

英语缩略词“35123”经常作为“Palmerdale, AL”的缩写来使用，中文表示：“AL帕尔默代尔”。本文将详细介绍英语缩写词35123所代表英文单词，其对应的中文拼音、详细解释以及在英语中的流行度。此外，还有关于缩略词35123的分类、应用领域及相关应用示例等。“35123”（“AL帕尔默代尔）释义英文缩写词：35123英文单词：Palmerdale, AL缩写词中文简要解释：AL帕尔默代尔中文拼音： pà ěr mò dài ěr缩写词分类：Regional缩写词领域：ZIP Codes

The national stadium located at Beijing Olympics park central area south, is in 2008 the 29th Olympics games's main stadium. Project total area 21 hectares, floor space 258,000m2. In the field the audience attends a banquet approximately is 91000, attends a banquet temporarily approximately 11000. Will hold the Olympic Games, Paralympic Game to hold the closing ceremony, the track and field competition and the football competition finals. After Olympic Games, will become Beijing residents widely to participate in the sports and to enjoy the sports entertainment's large-scale specialized place, and becomes has the terrestrial reference sports architecture with the Olympic Games inheritance. National stadium project for top grade sports architecture, main body structural design service life 100 years, fireproof rank for first-level, earthquake resistance fortification intensity 8 degrees, understructure work waterproofing rank 1 level. The project main body construction assumes the spatial saddle ellipse, the north and south length 333 meters, the thing width 294 meters, height 69 meters. The main body steel structure forms the whole the giant spatial saddle-shaped steel truss knitting type “the bird nest” the structure, the steel structure always uses the steel quantity is 42,000 tons, the concretes stand divides into upper, middle and lower three, the stand concrete structure for underground 1, ground 7 reinforced concrete frame - shearing force wall structure system. On the steel structure and the concretes stand withdraws completely, is not mutually connected, formally assumes encircles mutually gathers, the foundation sits on a connected foundation mat. In the national stadium roof steel structure has covered the double-decked membrane structure, namely fixes between the steel structure top chord the transparent upper formation ETFE membrane and fixes under the steel structure last quarter and the inner rim sidewall translucent lower level PTFE acoustics suspended ceiling.

The national stadium locates Olympic area the south of the park center of Peking, is the main stadium of the 29th Olympic sports games in 2008.The engineering always covers area 21 hectares, constructing the area 258,000 ms 2.Audience inside the field sits the seat as about 91000, sitting a seat about 11000 at the time among them.Will hold Olympic game, cripple will open closing ceremony, track and field events and football game finals.The empress of the Olympic game will become citizen in Peking to participate an athletics activity and enjoy the large and professional place of athletics amusement extensively, and become having landmark athletics building and the Olympics inheritance.The national stadium engineering constructs for the special grade athletics, the corpus structure design uses time limit for 100 years, fire-proof grade is one class, the anti- earthquake establishes to defend earthquake intensity 8 degrees, underground engineering waterproof grade is one class.The engineering corpus building presents space saddle oval, the south north grows 333 meters, thing breadths 294 meters of, 69 meters in height.The corpus steel structure becomes a whole giant space saddle form steel weave the type structure in"nest", the steel structure always uses the amount of steel as 42,000 tons, the concrete sees a pedestal is divided into up, in, next three, see set concrete structure is underground 1 layer, on the ground the reinforced concrete frame of 7 layers-shear dint wall structure system.Steel structure and concrete see an on the stage department take off to open completely, don't connect with each other with each other, presenting formally to round to match mutually, the foundation then sits on a foundation scaleboard for connecting with each other.Overlaid a double a layer film structure on national stadium roof steel structure, then fixed descend with fixedly in the steel structure in the steel structure transparent upper level ETFE film of of the new moon under and inside the translucent bottom layer PTFE voice of wreath side wall learn and mourn a crest.