桅杆

In the process of the calculation of the guyed mast' wind-induced fatigue, the structural finite model is just theoretical, and this theoretical model is different from the actual structure.

因此，以桅杆上有限测点的实测风振响应来反演结构的动态荷载，是间接测量的一种途径。

The damage probability of Guyed Mast is especially high under normal designing and constructing because its complicated principle is not fully known.

详细桅杆结构是由柔软的纤绳和细长的杆身组成，其大变形及强非线性使得其动力特性十分复杂。

Since the determination of dynamic load is difficult especially for structures with a great many degrees of freedom and nonlinearity such as guyed mast and power transmission tower,few researches have focused on this problem.

动态荷载的确定是一个较难的问题，自由度多且具有非线性的桅杆、输电线塔结构的动态荷载识别更少有人涉足。

There are some variances between them. In the guyed mast' wind resistance design, these differences are inessential if they are within the error permission.

本文采用基于模态分析的方法，通过建立桅杆结构的线性化有限元动力分析模型，运用结构在模拟风荷载下的有限测点风振响应数据识别了作用在结构上的风荷载时程。

Over in the west there was the last of the night, and in the east, to the windward, the first of day; and there, clear against the lightening sky, lay a vessel, already quite near, a very large two-masted double hulled canoe with a broad platform or deck overlapping the hulls with a thatched house upon it; and the vessel had two towering fore and aft sails, each with a curved crest reaching forwards.

在西面是黑夜的最后残余，在东面、在顶风的方向，则是一天的开始；而在那儿，在渐渐变亮的天空背景下，可以清楚地看见一艘海船，离他们已经很近了，那是一条很大的双桅杆、双船体的木舟，带有宽阔的平台或者甲板，平台覆盖在两个船身上面，平台上有座草顶的木屋；这条船扯着两面高高的前后帆，每一面帆都有朝前弯曲的冠顶。

The three steel masts are 50, 54, and 43 metres high, respectively, and carry sails that total 2824 m(30400 ft) In total, the Amerigo Vespucci has 26 sails square sails, staysails, and jibs: all are traditional canvas sails.

三根钢桅杆分别是50米， 54米和43米高，有效帆总面积，2，824平方米（30，400平方英尺）。其中，&维斯普西&号的26面帆直角帆，前支索帆和船艏三角帆：全部是传统的帆布帆。

And with the help of the holy mother of God we will again, says the citizen, clapping his thigh, our harbours that are empty will be full again, Queenstown, Kinsale, Galway, Blacksod Bay, Ventry in the kingdom of Kerry, Killybegs, the third largest harbour in the wide world with a fleet of masts of the Galway Lynches and the Cavan O'Reillys and the O'Kennedys of Dublin when the earl of Desmond could make a treaty with the emperor Charles the Fifth himself.

371&在天主圣母的帮助下，咱们会振作起来的，&&市民&拍着他的大腿说，咱们那些空空荡荡的港口又会变得满满当当。王后镇，金塞尔，黑草地湾，凯里王国的文特里。还有基利贝格斯。那是广阔世界上第三大港，当年德斯蒙德伯爵能够和查理五世皇帝本人直接签订条约的时候，从港内一眼可以望到戈尔韦的林奇家、卡文的奥赖利家以及都柏林的奥肯尼迪家那足有一个舰队那么多的桅杆。

A dreadful storm was approaching; once more the sails were reefed, and the great ship pursued her flying course over the raging sea.

大船在这狂暴的海上摇摇摆摆地向前急驶。浪涛像庞大的黑山似地高涨起来。它想要折断桅杆。

Use a square to align each rib at 90 degrees from the spars and perpendicular to the span.

使用一个曲尺以从桅杆和竖直到跨度的 90 度排齐每个肋。

What tree use you for masts and spars ?

桅杆和圆材你使用的什么木村？

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。