The rotor down-wash flow field was calculated using generalized down-wash flow model.

結合動量理論和渦流理論，推導了槳葉環(huán)量方程美女国产福利网站，用廣義尾流模型計算了旋翼下洗+流場91自拍偷拍论坛欧美性爱。

Methods 80 patients of acute cerebral infarction were divided into the treated group and the check group, the treated group was treated with alprostadil injection,and the check group with the compound danshen injection、low-molecular-weight dextran.collect the result of hemorheology of cerebral infarction and nail fold microcirculation in anterior circulation and posterior circulation.

將80例腦梗塞患者隨機分成治療組和對照組亚洲热在线视频店，治療組予以凱時注射液九九亚洲精品自拍，對照組予以復方丹參、低分子右旋糖酐治療。于治療前后分別測定血液流變學及甲襞微循環(huán)的各項指標免费色色网页。

As a power device in the water-propulsion system, which is widely used in the ocean tramp and amphibious tanks, etc., CRAFP can increase the main body propulsion and propulsive speed greatly.

對旋軸流泵作為動力裝置應用于噴水推進系統(tǒng)在线A毛片，在系統(tǒng)空間和其它幾何參數(shù)基本不變的條件下，可以大幅度提高主體推力和推進速度97免费在线视频观看，可應用于遠洋貨輪交配视频欧美性爱视频、水陸兩棲戰(zhàn)車等重要場合。

As a downstream piping system when the valve opens, reflux valve, when closed, the main medium used to prevent backflow to prevent the pump and drive motor reversal, as well as a container medium discharge; currently the most commonly used is the valve flap around the body Swing Pin rotation flap valve and the valve body along the vertical axis to move lift check valve, but the above two kinds of structures exist in the valve closed, medium speed back quickly from the largest drop to zero, inlet side of the pipe resulted in the rapid pressure rise, resulting Proportional Pressure Reducing Valves in damaging effects on the piping system of water hammer phenomenon, it is generally a diameter of valve production of 50 ~ 500 mm.

止回閥作為管道系統(tǒng)順流時開啟在线不卡高清无码，逆流時關閉的閥門黄色免站视频，主要用于防止介質倒流，防止泵及驅動電機反轉以及容器內介質泄放欧美成人情欲小说视频在线；目前使用最普遍的是閥瓣圍繞閥體銷軸旋轉的旋啟式止回閥和閥瓣沿著閥體垂直中心線移動的升降式止回閥欧美又粗又长啪啪动态，但以上2種結構的閥門均存在關閉時介質倒流速度從最大迅速降為零，致使管道進水管一側內壓迅速升高国产一级黄片乱伦，從而產(chǎn)生對管路系統(tǒng)有破壞作用的水錘現(xiàn)象黄色A片wwwcom，所以一般止回閥生產(chǎn)口徑為50～500 mm。

The flow distribution in micro premixing chamber is analyzed. The influence of the diameter of fuel inlets, the numbers of arc-shaped and straight micro-channel, the distance of second fuel inlets and the numbers of second fuel inlets on the uniformity of flow distribution and premixing characteristics are numerical investigated.

對微型預混腔內流場分布以及預混腔的燃料入口直徑深夜色网址大全，旋日操夜操人人操、直流槽數(shù)量，二次燃料入口距離和二次燃料入口數(shù)量對微型預混腔內流動分布均勻性及混合特性的影響進行了數(shù)值研究久久久久精。

Because of the viscosity of fluid and non-existence of velocity potential, the symmetry of mass matrix, stiffness matrix and the coefficient matrix of the first order of system no longer exists, so the modal analysis of system becomes very complicated.

由于流體粘性的影響www.bbixx15，流場有旋，沒有速度勢毛片久久，所以系統(tǒng)質量陣、剛度陣以及一階項的系數(shù)矩陣的對稱性被破壞中文字幕人妻斩无码毛片，從而使得系統(tǒng)的模態(tài)分析變得很復雜国产男女猛烈无遮挡动态图蜜臀。

US Army soldiers in the 1/ 501st of the 25th Infantry Division shield their eyes from the powerful rotor wash of a Blackhawk helicopter as they are picked up from a mission Oct.

Getty Images / Chris Hondros 美軍在1 / 25步兵師第501盾的士兵從一個功能強大的黑鷹直升機旋翼洗流他們的眼睛，因為他們從一團挑選10月15日發(fā)生在帕克提卡省外国a黄片视频，阿富汗免费观看黄色网站入口。

It showed that the influences from gyro zero-position,rocket thrust eccentricity,launch mode and downwash flow field caused by helicopter are evident.

分析結果認為導彈陀螺零位、發(fā)動機推力偏心精品福利在线视频、導彈發(fā)射方式www.美女中文字网络、直升機旋翼下洗流場等因素的影響是顯著的，特別是在這些因素的綜合影響下超碰aⅴ人人做人人爽，初始彈道將出現(xiàn)很大的偏離黄色视频网址在线看。