臂

The numerical simulation results show that the calculated stress value of gate crane jib exceeds the allowable structural strength in certain observation points, but less than ultimate strength of the metal materials.

由数值仿真结果表明：门座起重机臂架系统某些观测点的计算应力值已超过结构强度许用应力，但是小于金属结构材料强度极限。

In concretionaly, these theses" primary coverage has:(1)Syntheses introduce portal crane jib systemic structural style structural style, selectively analysis four-bar linkage portal crane"s working theory, working process as well as each parameter to impact whole machines performance.

具体说来，本论文的主要内容有：(1)综合介绍了门座起重机臂架系统的结构形式，重点分析了四连杆门座起重机的工作原理，工作过程以及各参数对整机工作性能的影响。

For small diameters, pipes can be pushed home by bar or lever assisted where possible by the swing of the crane jib.

用力将新管道的插口慢慢插入到喇叭口中，直到合适的位置为止；对于小口径的管道，可以用撬棒或拉杆将管道推入安装位置，如果可能可以摆动吊臂予以协助。

Hoisting the jib assembly by motor crane.

4.2.12.5 用汽车起重机将吊臂总成平稳提升。

The duct type jib of No.1 deck crane was found heavily bent and broken at the position of about 6.5m away from its heel about 0.8m in length.

一号甲板吊的箱形吊臂发现在离根部 6.5 米处严重弯曲并裂开约 0.8 米。

According to records, the first tower crane used in construction-related patents issued in 1900. Emerged in 1905 with fixed jib tower crane, made in 1923 the modern prototype of the tower crane, the same year the first complete modern tower crane. At that time, Germany in 1930 has begun mass production of tower cranes, and used for building construction. In 1941, the tower crane industry standard DIN8770 Germany announced.

据记载，第一项有关建筑用塔机专利颁发于1900年。1905年出现了塔身固定的装有臂架的起重机，1923年制成了近代塔机的原型样机，同年出现第一台比较完整的近代塔机。1930年当时德国已开始批量生产塔机，并用于建筑施工。1941年，有关塔机的德国工业标准DIN8770公布。

Maybe the decision is based on looks, body language, or the cut of your jib.

"也许这决定是基於期待，身体语言，或"减少您的臂。

Jib structure of the modal analysis, the structure of the natural frequencies and the corresponding vibration mode.

对臂架结构进行模态分析，确定结构的固有频率和相应的主振型。

With cranes working with speed and the weight of rising right jib system for dynamic analysis is necessary.

随着起重机工作速度和起重量的不断提高，对臂架系统进行动力特性分析非常必要。

There must be good support for the mast, jib boom attachment, and other fittings.

必须有良好的支持桅杆，臂景气实习，及其他配件。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。