双管的

In Two-Transistor Flyback Converter circuit, a power semiconductor device in Flyback Converting circuit has been replaced by two power semiconductor devices which parallel connected with an ultra-fast diode with soft recovery characteristics. Two-Transistor Flyback Converter can reduce greatly the switching stress of the power switch and does not need to degausser, suitable for high input voltage Switching Power Supply.

反激变换是从Buck-Boost变换演变而来的，将反激变换电路中的单个功率开关管用两个替代，并在每个功率开关管上并联一十箝啦的快恢复二极管而形成的双晶体管反激变换电路，能大大降低功率开关管承受的开关应力，且不需要消磁电路，非常适用于高输入电压的开关电源。

Metheds Analyzed the pair aerocyst ureter characteristic and the cupping difficult correlation factor, determined that each patient's nursing main point, the propaganda content and take the corresponding nursing measure and so on a series of foresighted nursing method.

分析了双腔气囊尿管特点及拔管困难的相关因素，确定每个病人的护理要点、宣教内容及采取相应的护理措施等一系列预见性护理方法。

Tracheal-intubation with mechanical ventilation was done, Chest X-ray was also taken and compared with previous picture revealed bilateral lung marking with pulmonary congestion and bilateral costophrenic angle blunting.

立即插管并使用呼吸器做呼吸的支持，且拍摄胸腔X光片。相较於手术前的X光片，双侧肺野的肺纹增加，肺区充血，和双侧肋膈角变钝。

According to capability of the circuit of DC motor, build the model of DC motor; designed the speed-current double closed loop system based on the model of DC motor; analyzed the method to solve the problem of discontinuousness of current.

二、根据直流电机回路，建立电动机的数学模型；针对该电动机模型，选用速度——电流双闭环控制系统，建立双闭环系统的控制方框图；分析晶闸管相控整流方式中出现电流断续现象的解决方法。

As an improvement of the conventional 1-way bypass graft for stenosed arteries, a new geometric configuration with symmetric 2-way bypass grafts is presented.

作为对传统单路动脉移植管旁通术的改进，提出了一种新的双路对称移植管旁通术的几何构型。

Boiler——a subcritical uniflow boiler of 1000t/h steam at MCR, two-furnace,"Л"mold arrangement in a power plant in which the severely high temperature corrosions was existed, was studied in this thesis.

针对目前双炉膛锅炉存在的水冷壁烟气侧高温腐蚀爆管现象，结合本课题的工程背景，以某发电厂高温腐蚀最为严重的7号锅炉——1000t/h亚临界双炉膛、。。。

Methods A total of 36 patients with advanced renal cancer were definitely diagnosed by IVP, US, CT or MRI examination. A 5F Yashiro catheter was introduced into the femoral artery with Seldinger's technique under local anesthesia, abdominal aortagraphy and renal arteriography in both sides of kidneys were performed routinely to display the blood supplying arteries of tumor, thereafter, renal embolization was performed under superselective catherization for chemotherapeutic embolizing. Then the clinical effect was observed, the amount of blood loss and the operation time were recorded. All these results were compared with that of randomly selected 17 patients before surgical operation with advanced renal cancer admitted during the recent 3 years but without embolization.

36例中晚期肾癌患者，均经临床检查、静脉肾盂造影、B超、CT或MRI检查而确诊；采用Seldinger's技术，局部麻醉下经一侧股动脉穿刺插管，引入5F Yashiro导管，常规行腹主动脉及双肾动脉造影，以显示肿瘤的供血动脉，再将导管超选择插管或尽可能接近肿瘤病灶，进行化疗栓塞，观察其临床改善情况，计算术中失血量及手术时间，并与随机抽取我院近3年所做的17例术前未行肿瘤供血动脉栓塞的肾癌患者进行对照。

Through the analysis of the advantages and disadvantages of both Venturis and Coriolis flow meters, a double parameter measurement method is put forward with the combination of them both.

通过对文丘里管和Coriolis流量计测量油水两相流各自的优点和存在的问题分析，提出了文丘里管和Coriolis流量计相结合的双参数测量方法。

To this end, the use of MCS-51 series AT89C51 single-chip device designed as the central traffic light control circuit, with a total of cathode seventh time the digital display module, the traffic light display module, transfer module, crystal oscillator circuit, reset circuit and control circuit 8051 in accordance with the actual traffic flow through the port P3 chip set red, green and double-time to kindle a digital countdown display,The turn of the three colors of lights and emergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

To this end, the use of MCS-51series AT89C51 single-chip device designed as the central trafficlight control circuit, with a total of cathode seventh time thedigital display module, the traffic light display module, transfermodule, crystal oscillator circuit, reset circuit and controlcircuit 8051 in accordance with the actual traffic flow through theport P3 chip set red, green and double-time to kindle a digitalcountdown display,The turn of the three colors of lights andemergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。