The jib system of portal crane is considered to be elastomer in this paper. Besides, taking finite element as basic theory and mechanical dynamics as analysis method,the paper simulates the virtual luffing process of jib system and seeking the relationship between plane movement and dynamic pressure condition of jib system using ANSYS8.1. By analyzing ,the paper gives some advice on structure optimizing.

針對以上問題，本文以MQ2535門座起重機臂架系統(tǒng)為研究對象99视频在线精品国自产拍免费观看，將門座起重機整個臂架系統(tǒng)視為彈性體，以機械動力學和有限元為理論基礎和分析手段，運用有限元軟件ANSYS8.1模擬臂架系統(tǒng)的實際變幅過程99黄片，探尋物品在變幅過程中水平移動與臂架系統(tǒng)結構動態(tài)受力之間的關系；通過分析其受力情況，對其結構的優(yōu)化提出了一些建議一级精品片。

Interventional therapy via jugular vein access is a safe, minimally-invasive and effective treatment for portal thrombosis.

經頸靜脈途徑介入治療門靜脈血栓是安全免费国产a国产片高清网站、微創(chuàng)、有效的方法香港日本韩国一级二级三级网站。

If you don't want to participate, then you're going to pay a much higher rate per kilowatt-hour," says Peter Corsell of GridPoint, a company that has developed a web-based portal that lets people respond to price changes from utilities."

如果你不想加入在线亚洲综合日本，你將為一度電付更高的價格。"格點電網公司的Peter Corsell說日韩黄网站高清观看。該公司以開發(fā)出基于網頁的門戶網站1024在线看片你懂得金沙人妻，能讓人們對電價變化做出反應。"

Since this year, china's mobile 12580 lives portal began to undertake wholesale market is popularized; Before this, chinese telecommunication is integrated also original 114 parts service is unified offer " life know-all " service.

今年以來黄色巨乳，中國移動的12580生活門戶開始進行了大規(guī)模市場推廣黄巴一；此前，中國電信也整合了原有114部分服務統(tǒng)一提供"生活百事通"服務95视频网址入口在线观看。

Looking similar to its previous "Network Space" product in terms of the square look and general specifications, the new LaCie Internet Space has, however, added a new feature which allows users to access the data stored in it via a portal on LaCie's website.

尋找類似以前的"網絡空間"的產品在廣場的外觀和一般規(guī)格日韩欧美在线观看综合网另类，新的互聯(lián)網空間的LaCie然而，增添了新的功能国产猛烈高潮大叫视频，使用戶能夠訪問數(shù)據(jù)存儲在它通過一個門戶網站LaCie的網站九九影院精品。

The patent paraumbilical vein is echo free tubular structure and continuous with the left portal vein, it also can be enhanced as a vascular structure in CT scan though it revealing a hypodense structure before contrast injection and simulating a hepatic tumor.

當門靜脈壓增高時，臍旁靜脈變粗形成一側枝循環(huán)久久久激情，上述結構以超音波掃描時為一管狀無回音之結構欧美日韩性爱AAA视频；以電腦斷層掃描時，在注射對比劑前似一低密度之病灶日韩自娱自拍AV，但在注射對比劑后其密度增高非常明顯免费视频人人视频www，可高達100Hu，顯示其為血管構造极品美女黄色视频。

In a letter submitted shareholder, Yahoo board of directors also said that this portal is willing to share, or 33 U.S. dollars higher prices sold to Microsoft.

在遞交股東的信件當中xxxx视频在线观看，雅虎的董事會還表示，這家門戶網站愿意以每股33美元或者更高的價格出售給微軟免费国产一级A片一片。

When portal hypertension the left umbilicalis vein reopened and dilated, the ligamentum teres hepatic could easily be discovered.

正確認識肝圓韌帶的不同的螺旋CT影像表現(xiàn)A片一级免费，有助于鑒別肝組織的其它病變。

Lightsome leading Internet companies as technology changes and also update the concept of change, from the early development of the Internet portal to the Internet bubble broke ....

引領風騷的互聯(lián)網公司隨著技術和理念的變更也在更新變遷国产高清怕怕怕视频在线观看，從互聯(lián)網發(fā)展初期的門戶網站到互聯(lián)網泡沫破久久久亚洲98精品视频。。女性一級AAAA黃片。欧美另类A片。

A similar space between an arch and the lintel of a portal or window.

在跨度內有兩個明顯的中心點且弧度比較平緩的拱。