降低电压的

In Two-Transistor Flyback Converter circuit, a power semiconductor device in Flyback Converting circuit has been replaced by two power semiconductor devices which parallel connected with an ultra-fast diode with soft recovery characteristics.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。

Because the input and output resistance of the CMOS complementary amplifier decreases owing to the negative feedback resistor,the voltage swings are reduced,and the response time of the current comparator is short and the speed is fast.

由于CMOS互补放大器的负反馈电阻降低了它的输入、输出阻抗，从而使电压的变化幅度减小，所以该电流比较器具有较短的瞬态响应时间和较快的速度。

Firstly, it is difficult to densify CeO2 based solid electrolyte materials and a sintering temperature above 1600℃is required to prepare dense CeO2 based solid electrolyte materials by the conventional solid-state reaction method;Secondly, doped ceria are brittle materials and have weak mechanical strength, which would be susceptible to fracture due to thermal stresses and mechanical stresses during cell fabrication and operation; Thirdly, electronic conduction will be introduced because of the reduction of Ce4+ under low oxygen partial pressure, which would reduce the output voltage and output power of the cells.

其一，CeO_2基电解质材料难以致密化，用常规的固态反应法制备的CeO_2基电解质粉体需要在1600℃以上烧结才能达到致密化；其二，CeO_2基电解质为脆性材料，机械强度低，使其容易在电池的制造及运行过程中由于热应力及机械应力而破裂；其三，CeO_2基电解质在燃料极一侧由于Ce4+还原为Ce3+出现电子导电，降低电池的输出电压和输出功率，影响电池的性能。

Firstly, it is difficult to densify CeO2 based solid electrolyte materials and a sintering temperature above 1600℃is required to prepare dense CeO2 based solid electrolyte materials by the conventional solid-state reaction method;Secondly, doped ceria are brittle materials and have weak mechanica...

其一，CeO_2基电解质材料难以致密化，用常规的固态反应法制备的CeO_2基电解质粉体需要在1600℃以上烧结才能达到致密化；其二，CeO_2基电解质为脆性材料，机械强度低，使其容易在电池的制造及运行过程中由于热应力及机械应力而破裂；其三，CeO_2基电解质在燃料极一侧由于Ce4+还原为Ce3+出现电子导电，降低电池的输出电压和输出功率，影响电池的性能。

The design on the receiver of Strong Current Source TEM and the data collection system. In order to increasing the depth of exploration and enhancing the measure precision, it need to decrease the minimal discriminable voltage, besides increasing the current intensity. 3. the program of interpretation software and precision of interpretation.

强场源瞬变大地电磁系统的接收机及数据采集系统设计问题在加大工作电流的同时，尽量降低系统的最小可分辨信号电平，这就意味着探测深度与精度的相对增大与提高，这对数据采集系统提出了更高的要求，要求数据采集系统动态测量范围大，最小可测电压的能力与信噪比高。

There are some midst matters in wastewater, for removal of these matters the electrolyze time should exceed 30 min. The experimental results show that the bipolar packed bed cell has best treatment efficiency of phenol wastewater under condition that voltage is 10V, electrolyses time is 30 min, and velocity of flow is 1.03 cm/min.Basic on the study on treating of phenol wastewater, this paper carry on a research on treating of circuitry board film wastewater by bipolar packed bed cell.

本文在以上处理苯酚废水研究的基础上，论文研究了BPBC处理两种不同浓度得脱膜废水，试验结果表明，对于浓度较高的酸化气浮-光酚顿的出水，在外加氧化剂双氧水后，最佳处理工艺：槽电压8V，实际电解时间60min，双氧水的投加量为1倍理论药量，pH值为3，COD的去除率达到60%；在酸化气浮过程采用酸铜废液调节pH值将会降低COD的去除率。

Performance of The SrTiO3 varistor loops has an advantage over ZnO ones not only in excellent voltage sensitivity but also in high capacitance.

更重要的是解决了ZnO压敏电阻器固有的在焊接挂锡后电压降低严重的问题。

By so doing, switching loss is reduced and the utilization ratio of busbar voltage is increased. The relevant software was designed to meet the needs of high speed cone winder.

针对可能出现的过调制情况给出了两种针对高转速和低转速的调变方法，降低了开关损耗，提高了直流母线电压的利用率。

All methods of secondary arc extinction are directed toward reducing the magnitude of secondary arc current and recovery voltage, which in turn will reduce the extinction time of the arc and assure successful single-pole autoreclosure .

所有的用于熄灭潜供电弧的方法均可归结到降低潜供电流和恢复电压的幅值，进而减少电弧燃烧时间，保证单相自动重合闸的成功。

Through simulation and experimental ways to combine studies of plasma engine oscillation circuit inductance on the impact Experimental results show that the increase with inductor current oscillation lower voltage oscillation, Current changes in oscillation and the existence of a 0 ~ 28mH mutation interval conclusions.

本文通过实验与仿真相结合的方式研究了等离子发动机回路电感对振荡的影响，通过实验得出了随着电感增大电流振荡降低电压振荡增加，且电流振荡变化存在一个0~28mH的突变区间的结论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。