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twin-twin
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  双胞胎
     Paradoxic activation of the renin-angiotens-in system in twin-twin transfusion syndrome: An explanation for cardiovascular disturbances in the recipient
     双胞胎输血综合征的肾素-醛固酮系统异常活化:对受血者心血管系统异常的解释
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  “twin-twin”译为未确定词的双语例句
     Clinical analysis of twin-twin transfusion syndrome of the neonates
     双胎输血综合征新生儿的临床分析
短句来源
     Diagnosis, management and pregnancy outcomes of twin-twin transfusion syndrome
     双胎输血综合征诊断处理和妊娠结局
短句来源
     Objective To investigate the diagnosis, treatment and pregnancy outcomes of twin-twin transfusion syndrome(TTTS).
     目的探讨双胎输血综合征的临床诊断、处理及妊娠结局。
短句来源
     Twin-twin intersections reduce the grain size and induce martensite transformation.
     多系孪晶相互交割使晶粒尺寸不断减小,并在孪晶交叉处形成了马氏体相;
短句来源
     Finally, a nanostructured surface layer about 20μm thick forms after SMAT process, of which the microstructure consists of a mixture of both martensite and austenite phases with grain size about 10~30nm. The realization of surface nanocrystallization is considered as resulting from the grain refinement due to dislocation-twin and twin-twin interactions, and its hardness is improved greatly after SMAT.
     最终在样品表面形成了厚度约为20μm的纳米层,表层显微组织由晶粒尺寸为10~30nm的双相组织(马氏体和奥氏体)组成·表面纳米化是通过位错 孪晶及孪晶 孪晶相互作用实现晶粒细化·表面纳米化后,表层硬度显著提高·
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  相似匹配句对
     Twin sister
     孪生姐妹
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     TWIN PARADOX
     孪生子佯谬
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     On The k-Twin Primes Problem
     关于k生素数问题
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     Twin blow-molding system
     双机吹塑系统
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  twin-twin
Incoherent twin boundaries and twin-twin intersections have been identified as nucleation sites for recrystallization in a Co-Cr-Mo alloy.
      
Effects of slip-twin and twin-twin interactions on crack initiation and high-order twinning are reviewed.
      
The analysis of twin-slip and twin-twin interactions in fcc crystals is reviewed using the method proposed by Sleeswyk and Verbraak for the interactions between bcc twins.
      
The microstructures generated in the flange portion corresponding to the individual process, appeared to be blocky martensite nucleation and growth at the shear band intersections, twin-twin band or twin-slip band intersections, respectively.
      
Heterogeneous shear straining on both sides of the specimen occurred in the two-temperature process, and the microstructure of the failure point was observed as twin-twin intersections.
      
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Twin-twin transfusion syndrome(TTTS)is a very insteresting issue of gynaecology and obsterics.Peripheral vascular flow patterns of 11 fetuses with TTTS were evaluated by Doppler ultrasound to study the different hemodynamic patterns between two fetuses and forecasted for the risk factors during late pregnancy.Results:1.The pulsating indexes(PIs)of umbilical artery for the donor and recipient fetuses of TTTS group were higher significantly than that of normal group(P<0 01).2.The PIs and peak systolic velocity...

Twin-twin transfusion syndrome(TTTS)is a very insteresting issue of gynaecology and obsterics.Peripheral vascular flow patterns of 11 fetuses with TTTS were evaluated by Doppler ultrasound to study the different hemodynamic patterns between two fetuses and forecasted for the risk factors during late pregnancy.Results:1.The pulsating indexes(PIs)of umbilical artery for the donor and recipient fetuses of TTTS group were higher significantly than that of normal group(P<0 01).2.The PIs and peak systolic velocity of the peripheral artery descending aorta,ductus arteriosus and middle cerebral artery were decreased in TTTS group(p<0 01).3.The signs of umbilical venous pulsations and mitral tricuspid valve regurgitation were seen in the recipient fetuses with congestive heart failure during late pregnancy.Conclusion:The changes of peripheral vascular flow provided an important data for the diagnosis and treatment of TTTS,and Doppler ultrasound monitoring on the fetuses with TTTS may be useful for decreasing the mortality in preinatal period.

双胎输血综合征(TTTS)近年来已越来越引起妇产科临床的关注。本文应用多普勒超声对11例TTTS胎儿的外周血流进行评价,以探讨两胎儿间不同的血流动力学形式及对妊娠后期危险性预测,结果:1、供、受血儿脐动脉搏动指数(PI)值明显高于正常组(P<0.01);2、外周动脉-降主动脉(DAO)及大脑中动脉(MCA)PI值和峰值(Vm)降低(P<0.01);3、妊娠晚期受血儿充血性心衰加重时脐静脉出现搏动性血流及心内房室瓣返流,结论:外周血流多普勒频谱改变为TTTS的诊断和治疗提供了准确的资料,TTTS胎儿的多普勒超声监测有助于降低围产期死亡率

Objective To investigate the relations between absent and/or reverse end diastolic velocity of fetal umbilical artery (AEDV) and maternal and fetal pathological factors and perinatal outcome. Methods To analyze the clinical informations of 33 case, with AEDV by pulse doppler ultrasonic examination. Results (1) There are 9 cases (27.3%) complicated with different kinds of fetal morphologic abnormality, 6 cases of perinatal death. (2) In 6 cases (18.2%) of twins, twin twin transfusion syndrome (TTTS)...

Objective To investigate the relations between absent and/or reverse end diastolic velocity of fetal umbilical artery (AEDV) and maternal and fetal pathological factors and perinatal outcome. Methods To analyze the clinical informations of 33 case, with AEDV by pulse doppler ultrasonic examination. Results (1) There are 9 cases (27.3%) complicated with different kinds of fetal morphologic abnormality, 6 cases of perinatal death. (2) In 6 cases (18.2%) of twins, twin twin transfusion syndrome (TTTS) occurred in 3 cases. In 6 cases when the body weight differences between the 2 babies were higher than 24.8%, neonatal death occurred in 4 cases. (3) The group with AEDV showed significantly higher incidence of pregnancy induced hypertension, oligoaminos, IUGR, fetal distress and neonatal death than that of normal group. Conclusions The appearance of AEDV shows the extreme disfunction of mothernal placental fetal circulation and may be related to poor outcome.

目的 探讨胎儿脐动脉舒张末期血流缺失、返流(AEDV) 的产生因素及与围产儿结局的关系。方法 应用脉冲多普勒超声检测胎儿脐血流,对33 例出现AEDV(AEDV 组) 的母儿的临床资料进行分析,并与未发生AEDV的424 例( 对照组)进行比较。结果 (1)AEDV组9 例(27 .3 %) 胎儿有不同种类的形态异常,其中6 例围产儿死亡。(2)AEDV 组中双胎6 例,3 例为双胎间输血综合征(TTTS)。6 例双胎两胎儿间体重差异最低在24.8% 以上,其中4 例围产儿死亡。(3)AEDV 组妊高征、羊水过少、胎儿宫内发育迟缓、胎儿窘迫及新生儿死亡的发生率均明显高于对照组。结论 胎儿脐血流检测中,出现AEDV改变,是母体胎盘、胎儿胎盘循环障碍的表现,提示胎儿预后不良,临床上应予以高度重视。

Objective[WT5”BZ] To sam up the experience in diagnosis and separation of a thoracopagus conjoined twins. [WT5”HZ]Methods[WT5”BZ] Thoracopagus twin boys were admitted for evaluating possible separation and repair at age of 21 days. X rays, CT, MRI, and ultrasound scan of torso showed separate and normal gastrointestinal and biliary tracts, little shared vasculature, but shared pericardium, diaphragm and liver parenchyma. The chest junctions were at the sternums and the most inferior two pairs of the ribs....

Objective[WT5”BZ] To sam up the experience in diagnosis and separation of a thoracopagus conjoined twins. [WT5”HZ]Methods[WT5”BZ] Thoracopagus twin boys were admitted for evaluating possible separation and repair at age of 21 days. X rays, CT, MRI, and ultrasound scan of torso showed separate and normal gastrointestinal and biliary tracts, little shared vasculature, but shared pericardium, diaphragm and liver parenchyma. The chest junctions were at the sternums and the most inferior two pairs of the ribs. One twin (twin A) had a protruding heart with VSD and ASD. [WT5”HZ]Results[WT5”BZ] The infants were separated successfully at age of 45 days. The chest defect of twin A was closed with aid of a polyester pericardial patch graft and a silicon supporter. Managing anesthesia met some difficulty in understanding of the anatomical and physiological consequences of the complex anomaly. They are had brain edema and multiple system organ failures after separation, and were cured under intensive care. They are alive and well 6 months after surgery. [WT5”HZ]Conclusions[WT5”BZ] Careful preoperative evaluation proper anesthesia and surgical technique, and postoperative care are essential to the successful separation of the conjoined twins. [WT5”HZ]

目的 通过胸腹联体双胎婴儿的分离手术提供联体婴儿外科诊疗方法。 方法 术前经X片、CT、MRI和B超等确诊 ,该联体婴共用一副肝脏、心包、膈肌、胸骨中段及 5~ 10肋相连 ,胸膜紧贴。有 2个心脏 (A婴心脏突入B婴心包腔 ,并伴有房室间隔缺损 )、两副消化道和胆道。经积极术前准备 ,在营养和肝功能改善后 ,于生后 45天在多科协作下成功地进行联体分离手术。 结果 术中见腹腔中有各自的消化道 ,共同肝相连面积约 7cm× 6cm ,用电刀切开。胸腔中 ,见两婴的心脏共用一个心包 ,也予以切开、用人造涤沦片修补缺损。胸骨、肋骨也分别切开。A婴的胸腔用医用硅胶板做成支架 ,予以扩大。术后二婴皆存活。 结论 联体婴儿术前正确评估 ,正确选用麻醉和手术方法 ,术后加强监护是手术成功的关键。

 
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