Objective : To evaluate left ventricular hemodynamics in rapid two-stage arterial switch operation ( ASO ) for patients with transposition of great arteries ( D-TGA ) by Doppler echocardiography .

目的：观察完全性大动脉转位（D-TGA）患者快速 二 期大动脉调转 术（ASO）中左心室血流动力学变化，评价肺动脉环缩对左心室的影响。

Two process models of two-stage sequencing batch reactor with series operation for biological phosphorus and nitrogen removal are presented based on analysis of the defects of single-stage activated sludge method .

在分析单级活性污泥法在除磷脱氮中存在不足的基础上，提出了两种 双 级序批式活性污泥反应器串联 运行的除磷脱氮工艺模式。

Methods Fourty male SD rats were divided into two groups randomly the experimental group in which a two-stage ligation of portal vein plus ligation of the left adrenal vein was performed and the control ( sham operation ) .

目的建立食管静脉曲张大鼠模型方法40只SD大鼠随机分两组（实验组与对照组），实验组行门静脉 两 步法结扎加左肾上腺静脉 结扎。

The mechanism and characteristic of the variable speed pump is analyzed in detail . Meanwhile the two-stage optimal operation model of water supply system is established in which the constant speed pumps and the variable speed pumps can operate in parallel .

对调速泵的调速机理和调速特性进行详细分析，建立定速泵和调速泵并联运行的 两 级优化 调度模型。

Experimental results showed that an average rejection of 88.16 % calcium sulfate could be achieved by a two-stage flotation operation approaching the theoretical removal ratio of 91.58 % from crude carnallite .

实验结果表明，分级浮选法除钙率平均达 88.16%，接近原矿的理论可除钙离子量91.58%。

And a two-stage simulation method for solving the problem of multi-fields couple models ' lowering rank and linear operation was discussed in detail .

并对解决多场耦合模型的降阶线性 处理 的 二重方法进行了详细论述。

Report of two-stage radical operation with complex congenital heart disease

复杂先心病Ⅰ 期 分流术 后行 Ⅱ 期 矫治 术结果报道

369 operations were performed in the 333 feet which 30 severe patients accepted two-stage operation .

333个足共施行369人次手术，30例畸形严重者 分 两期 手术矫正。

Methods Using memory-alloy mesh as the skeleton to construct an artificial trachea by two-stage operation . After 2-year animal experiment we successfully performed the operation in a patient with recurrent carcinoid of the trachea radically resected the tumor and primarily reconstructed the trachea .

方法应用记忆合金网 二 期 手术成形制成人工气管，经过2年的动物实验后，应用于临床，为1例复发性气管类癌，重建了气管。

It is pointed out that the two-stage regeneration with co-axial counter flow in series has the characteristics of better adaptability and operation flexibility strong accident resistance and low energy consumption .

同轴串联逆流 两 段再生工艺适应性较强、 操作弹性较大、抗事故能力较强、消耗指标较低，但在催化剂置换率和开停工时间方面又相对处于劣势。

Rapid two-stage arterial switch operation for neonatal D-transposition of the great arteries

快速 二 期动脉转位 术纠治新生儿完全型大动脉转位

According to the analysis and calculation the two-stage series bypass system with 35 % capacity in Fengcheng Power Plant can meet all the operation requirements and realize the matching between boiler and turbine effectively .

通过分析计算，丰城电厂660MW超临界机组选择35%容量的 两 级串联旁路系统可以满足所要求的各项 功能，实现较好的机炉匹配，满足机组的冷、温、热、极热态启动要求。

The paper studies the simulated annealing algorithm of two-stage hybrid scheduling model based on through transport which the objective function is the minimized operation time .

研究基于直送的 两 阶段混合调度模型的模拟退火算法，其目标函数是最小化 作业时间。

Compared with these two modes the two-stage injection presents good performance which realizes smooth running and reduces both NOx and smoke emissions by more than 40 % in wide operation range .

双 段喷射表现出良好的性能，它实现了柴油机的柔和运行，并且在全 负荷范围内使NOx和碳烟排放降低40%以上。

The improvement test of typical two-stage up-flow biological aerated filter ( UBAF ) with ceramsite was performed using the characteristics of different flow BAFs and the optimized backwash operation .

利用不同流向BAF反应器的特性以及优化反冲洗 操作，对典型的 两 级上向流陶粒曝气生物滤池工艺进行改进试验。

Stability of the Two-stage SBR System Treating Dyeing Wastewater During a Long-term Operation

二 级SBR系统处理染料废水长期 运行的稳定性

The principle of flap design in two-stage operation .

Ⅱ 期 手术皮瓣设计原则；

Results Primary operation was performed in 505 patients and two-stage operation was performed in 2 patients .

结果一期手术505例， 二 期 手术2例。

Methods From 2001 to 2005 cases with microtia received two-stage operation for total reconstruction of the auricle in which the first stage involved fabrication and grafting of the three-dimensional autologous costal cartilage framework and the second stage was the ear elevation operation .

方法从2001年～2005年对32例小耳畸形患者应用 自体肋软骨二期全耳再造法进行耳廓再造共33个， 手术Ⅰ期为耳解剖结构三维轮廓再造，Ⅱ期为颅耳角再造。

The role of echocardiography in surgical decision making in rapid two-stage arterial switch operation for patients with transposition of great arteries

超声心动图在完全性大动脉转位患者快速 二 期大动脉 调转 手术时机判断中的作用

By using city sewage water that is further treated and treated by two-stage demineralized system as test water source dynamic simulation is conducted to the operation of plant boiler for checking the steam quality variation under high-temperature high-pressure condition .

用经深度处理后再经 二 级除盐系统处理的城市污水作为试验水源，动态模拟电站锅炉的 运行 工况，考查其在高温高压条件下水汽品质的变化情况。

The two-stage crusher large output the noise is small equipment operation is stable and the crushing efficiency is very good .

双 级破碎机产量大，噪音小，设备 运行稳定，破碎效率非常的好。

Conclusion The two-stage operation of liver cancer which is on the base of combining chemotherapy radiotherapy and immunotherapy is the way to go of liver cancer therapy .

结论联合化疗、放疗及免疫治疗以能够达到 二 期 手术的综合治疗是今后肝癌治疗的方向。

It is proposed that BPH causing lower urinary tract obstruction is an important risk factor of bladder tumor and the prostate should be resected simultaneously or by the two-stage operation .

认为前列腺增生引起严重的下尿路梗阻，可能是引起膀胱肿瘤恶性程度升高的一个重要原因，应行同期或者 二 期 手术解除其引起的下尿路梗阻。

According to the theoretical calculation accumulative two-stage countercurrent adsorption could save approximately 42.3 % PAC than single-stage operation in the same adsorption .

根据理论计算，在相同吸附效果下，累积 二 级逆流吸附较单级吸附 操作节约42.3%的PAC，通过静态烧杯实验和动态反应柱实验均验证了理论计算的正确性。