双叶

GK型双叶式人工心脏瓣膜动物实验研究

Animal experiments of GK bileaflet prosthetic heart valve

PTA双叶和四叶各1例，三叶9例。

The number of the truncal cusps included 1 case of bicuspid , 1 case of quadricuspid and 9 cases of tricuspid .

为此，给出了两相干点源空间干涉的精确解，该解是以两点源s1和s2为公焦点，以s1s2为转轴的回转双叶双曲面族。

This paper presents the accurate solution for the interference of two coherent point sources , which is a family of hyperboloid .

目的评价国产GK型双叶式人工心脏瓣膜的临床疗效。

Objective To evaluate the clinical effects of native GK - double - leaflet mechanical heart valve .

方法：7例单纯先天性肺动脉瓣狭窄（PS），根据患儿的年龄和PS的轻重，3例选择单球囊法，4例采用双叶球囊法，进行瓣膜扩张术。

Methods : From March 1996 to December 1998 , PBPV on seven children with PS using one balloon or dual balloon were performed according to age and degree of PS.

共植入GK双叶瓣72枚，其中二尖瓣45枚，主动脉瓣27枚；

A total of 72 GK bileaflet mechanical valves were implanted , 45 in mitral position , and 27 in aortic position .

结果8例CT表现为结肠内偏心性软组织肿块影，其中4例见肾型或双叶型影，3例见香肠样影，2例呈羽毛球样影；

The diagnosis was proved by operation and pathology . Results Among 8 cases CT examination , there were eccentric parenchyma masses in colon . The masses appeared reniform or bifoliate shape in 4 cases , sausage shape in 3 cases and shuttlecock shape in 2 cases .

中国ZDM双叶人工心脏瓣膜动物实验研究

Animal experience study of ZDM bileaflet mechanical heart valve

而对于双叶瓣，保留全瓣组TSS均高于其它2组（P<0.05）。

And as to bileaflet disc , the TSS in the group of preservation of total subvalvular apparatus was higher than that in the other two groups ( P < 0.05 ) .

结论GK双叶瓣具有良好的生物相容性、耐久性和血流动力学特性，置入动物体内可获得满意的长期生存效果。

Conclusion GK bileaflet prosthetic heart valve exhibits good biological consistency , satisfied durability , and excellent hemodynamic properties . Implanting into the animal body can acquire the satisfied long-term existence result .

目的应用GK型双叶式人工机械心脏瓣膜（GK双叶瓣）置入动物体内，行瓣膜置换实验研究。

Objective To observe and evaluate the long-term existence result of a new type of bileaflet mechanical prosthetic heart valve ( GK bileaflet valve ) after its implantation to the animal bodies .

结果（1）12例桥本病，10例Graves病甲状腺双叶呈弥漫对称性或基本对称性肿大，密度均匀减低，无腺内更低密度结节。

Results ( 1 ) All 12 cases of Hashimoto 's thyroiditis and 10 cases of Graves disease demonstrated diffuse , and symmetrical or basically symmetrical enlargement of bilateral leaves with evenly reduced density , and no lower density nodule was seen in the gland .

双叶旋转皮瓣在修复头皮缺损中的应用

Application of bilobed rotation skin flap for repair of scalp defect

双叶片组合式搅拌器搅拌特性的实验研究

An Experimental Investigation on the Mixing Characteristics of the Combinatory Two-Blade Impellers

双叶排旋转失速起始的研究

Research of onset of rotating stall for double blade rows

三角形双叶皮瓣修复头皮缺损

Reconstruction of scalp defects using simple designed triangle bilobed flap

双叶轮液下自引气曝气机优化运行实验研究

The Research in Operation Optimizing of Double-rotor Underwater Aeration Machines by Experiment

双叶片轴流通风机叶片断裂原因分析及改造

Blade Breaking Analysis & Transformation of Double Blade Axial Fan

顺向双叶机械瓣设计与流场计算

Design of bileaflet mechanical valve with downstream direction and computation of velocity

双叶等距木质螺旋桨的三维建模与数控加工

Modeling and NC machining of two-blade equidistant wood propeller

一种新型人造心脏双叶瓣跨瓣压差的研究

Study of the transvalvular gradient of a newly China-made bileaflet heart valve prosthesis

双叶抗栓素抗血栓形成作用的研究

Study on Antithrombotic Effect Shuang Xie Kang Shuan Su

双叶片插板式摆动马达的密封结构设计

Design of Seals for Swing Motor with Double Blades

减少对血流干扰的双叶机械心脏瓣膜的新设计

A New Design of Bileaflet Heart Valve to Eliminate the Blood Flow Disturbance

探讨单叶产钳、双叶产钳和胎头吸引术在剖宫产中的应用吸收，吸取吸收的动作

Investigate application of simple and double leaf forceps and vacuum extraction in cesarean delivery

第一掌背动脉双叶皮瓣在手外科中的应用

Clinical application of the bilobed flap with first volardorsal artery in repair of the hand

双叶皮瓣设计中的数学原理研究

Mathematical principle in design of bilobed flap

吻合血管尺动脉腕背支为蒂双叶皮瓣的临床应用

Clinical Application of Double Skin Flops Pedicled with the Dorsal Carpal Branch of Ulnar Artery

所有象？缓旺？这样的点都位于一个双叶曲面上。

All points such as ?? and ?? lie on a surface of two sheets .

蜗舌对双叶轮抽油烟机噪声和性能的影响

Effects of the volute tongue on noise and performance of dual fan kitchen exhaust hoods