查询词典 flutter valve

It researches the regularity of A (geometrical cross section area of valve), Sc (obtained by the definition of effective cross section area of valve), Sa and Sv (obtained by sonic velocity air exhaust method) to the change of the opening of valve, x. By contrastive method this thesis discusses the reliability and correlation of all methods above for solving effective cross section area of valve.

研究了 A， Sc （根据试验由有效截面积 S 的定义算出）， Sa及 Sv随阀开度 x 变化而变的规律，通过对比探讨了求解以上各种有效截面积方法的可靠性及相互关系等。

Primary atrial tumor has obvious characteristic on RT-3DE: All the atrial tumor display the same size of stereoimages as the tumor themselves. There is a clear boundary between the stereoimage of the myxoma and the atrial wall and there exists a short pedicle connecting the atrial myxoma to the atrial wall or the interatrial septum. The body of the atrial myxoma moves to and fro through the atrium and the atrioventricular valve with the contraction and relaxation of the heart with a fixative pedicle. Atrial myxoma leads to relative atrioventricular valve incompetence during systolic phase and relative atrioventricular valve stenosis during diastolic phase, but doesn't result in pathological changes of atrioventricular valve which restore to normal after exsection of the atrial myxoma. Malignant atrial tumor closely and extensively contact with atrial wall without obvious boundary, pedicle and movement with the contraction and relaxation of the heart.

所有心房肿瘤RT-3DE均实时显示与肿瘤大小相同的立体形态图像；心房黏液瘤立体形态图像与心房壁界限明显，都通过一短蒂与房间隔或心房壁相连，瘤体以蒂为固定点随心脏收缩、舒张在心房与房室瓣口之间往返运动；心房黏液瘤收缩期瘤体导致房室瓣相对关闭不全，舒张期瘤体导致房室瓣相对狭窄，但瘤体不引起房室瓣器质性病变，瘤体摘除后房室瓣功能即恢复正常；恶性心房肺瘤立体形态图像与心房壁关系密切，界限不明显，接触范围广泛，无蒂，瘤体不随心脏收缩、舒张运动。

1 Valve Also known as gate valve, gate valve, a valve is widely used.

1.1 闸阀也叫闸板阀、闸门阀，是广泛使用的一种阀门。

3 Ball Compared valve, globe valve, ball valve is a new, increasingly widely used valve.

1.3 球阀相比闸阀、截止阀，球阀是一种新型的、逐渐被广泛采用的阀门。

March Hangzhou spring bright, sunny, China General Machinery Industry Association, a grand-scale valves Branch of the Sixth Congress of the valve market-cum-Workshop March 19 to 20 in the beautiful scenery of Hangzhou Void Lake Holiday Inn held from my Reducing Valves Valve China Valve Association member units, the main leaders (President / General Manager) and the technical director of sales and the association is responsible for co-ordinators, etc. About 300 people gathered together together to participate in China's valve industry for nearly five years of the most important meeting.

3月的杭州春光明媚，风和日丽，中国通用机械工业协会阀门分会规模盛大的第六届会员代表大会暨阀门市场研讨会3月19日至20日在风景秀美的杭州太虚湖假日酒店隆重举行，来自我国阀门中国阀协会员单位的主要领导及技术负责人、销售负责人和协会联络员等约300多人聚集在一起，共同参加我国阀门行业近五年来最重要的一次会议。

Artificial mechanical cardiac valve was produced by Lanzhou Flight Control Instrument Factory. Prosthetic valve frame was acid-resisting chrome-nickel alloy of high intensity, valve ring was polyester filament fabric, valve was consisted of graphite matrix in interior and deposited hydrolytic carbon on surface.

人工机械心脏瓣膜由兰州飞控医疗仪器厂生产，为C-LⅠ型短柱人工机械心脏瓣膜，瓣架为高强度耐酸铬镍合金，瓣片的内部为石墨基体，表面为沉积热解碳，瓣环为涤纶长丝织物。

Hydraulic control valve is a main valve and the exterior of the needle valve and a combination of the pilot valve.

水力控制阀是由一只主阀及其外装之针形阀和先导阀等组合而成。

Chapter 4 non-return valve, check valve can be divided into its system, check valve design and valve types.

第4章为止回阀，主要分为止回阀及其系统、止回阀设计和止回阀类型等。

Non-return valve which belongs to this type of valve, which includes Swing Check Valve Check Valve and the take-off and landing.

其中止回阀就属于这种类型的阀门，它包括旋启式止回阀和升降式止回阀。

It is a trend that the proporational control valve subsititute for servo valve in most field of engineering applications. This paper introduces a digital control-amplifier for electro-hydrolic proporational direction throttle valve,which is aggregatied with the valve controlal system.Its core is the system of Intel 8098 microcontroler.

在广大的工程应用领域，以比例阀替代昂贵的伺服阀是一种趋势，本文提出了电液比例方向节流阀数字控制放大器，它以INTEL 8098单片机系统为硬件核心，控制放大器的硬件系统和软件系统，与阀控系统融为一体。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。