查询词典 DC

The theoretical analysis and simulation results of 1kW 40~60VDC/380VDC full-bridge Boost mode two-input DC-DC converter have shown that the converter has the advantages such as double isolation among multiple input sources and between output and input of the converter, simple topology, strong voltage matching ability, multiple input sources can supply the power simultaneously or individually, small input current ripple, high power density, high conversion efficiency, high reliability at short circuit, magnetic flux of high-frequency transformer easy to add up etc.

1kW 40～60VDC/380VDC全桥Boost型双输入直流变换器的理论分析和仿真结果表明，这种变换器具有多路输入源之间以及输出与输入源之间双隔离、电路拓扑简洁、电压匹配能力强、多路输入源可同时或分时供电、输入电流纹波小、功率密度高、变换效率高、负载短路时可靠性高、高频变压器磁通易于叠加等优点。

M DC. As a result of our experiment, we conclude that the coefficient of Menard formula is 0.45 and the EDI for rubble fills and sand is 13～16m, if used in Code table. At the same time, 10000kN. m DC is applied in a practical project for compaction of rubble fills underlying weak subjacent bed in Zhuhai, Guangdong Province.

同时作者又在珠海某具有软弱下卧层的碎石回填地基上成功进行了10000kN.m的高能级强夯工程实践，以期在本次试验、工程研究的基础上，为地基处理规范中强夯部分的修订和发展提供实用参数。

Furthermore, the threshold voltage and subthreshold swing shift of a-Si:H TFT under DC operation is discussed and measured.DC voltage stress causes a constant Vt shift ,but subthreshold swing isn't change much.

另外，考量元件稳定度的加速实验，尝试分析偏压时间对於临界电压偏移量以及次临界摆幅的影响，结果显示长时间的直流偏压只会对临界电压偏移量造成影响，对於次临界摆幅的影响很小。

A method based on symbolic time series and entropy theory is proposed to analyse the nonlinear behaviours of DC-DC converters.

本文提出了一种采用符号时间序列和熵理论分析DC-DC变换器非线性行为的方法。

Design DC/DC circuit using converter module. At last we give the accurate circuit using TL1451 and give the important testpoint's waveform.in term of the frame of the digital camera.

论文最后根据数码相机驱动电路的机构，设计出由具体芯片构成显示驱动电路和详细分析了所设计驱动电路的工作原理。

The driving part is made up of leveling driving seat, decelerate machine, YWZ arrester, coupling, drive distributing box, shafts and sheath connector, universal cross transmission shaft etc. The main motor is equipped with DC timing motor in high power and DC numerical control system imported from England which has the qualities of rotate speed adjustment, low current in startup, large torsional moment and suits specially for continuous startup under the situation of high load.

驱动部分是由高程驾驶座位，减速机， ywz避雷器，耦合，驱动配电箱，槽及护套管接头十字万向传动轴等主电机配备直流调速电机在高功率直流数值控制系统输入来自英格兰有素质的转速调整，低电流启动大扭矩，特别适合连续开机的情况下，高负荷。

So the smaller turns ratio of the flyback transformer in the forward-flyback hybrid bi-directional DC-DC converter helps to transfer power with higher efficiency.

文章研究了采用不同的正激、反激变压器匝比对传输功率的分配比例、电流纹波等影响，并进行了试验验证。

High-performance RISC CPU · Only 35 single-word instructions to learn - All single-cycle instructions except for program branches which are two-cycle · Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle · Interrupt capability (up to 7 internal/external interrupt sources)· 8-level deep hardware stack · Direct, Indirect and Relative Addressing modes

高性能的RISC CPU·只有35单条指令学习-除了程序分支是两个周期·工作速度：直流- 20 MHz的时钟输入DC - 200 ns的所有单周期指令指令周期·中断能力（/外部中断源，高达7内部）·8级深硬件堆栈·直接，间接和相对寻址方式

A multi-resonant DC/DC converter, which is very fit for ultra-high frequency applications is analyzed.

分析了一种非常适合工作在超高频下的多谐振DC/DC变换器。

Using solar cell to absorb solar energy and store into battery by DC-DC charger during daytime. When in the night, battery will be discharged to white LED by optical sensor and control circuit. Since the weather maybe cloudy or rainy, there is a spare AC power supply loop consist of transformer, bridge rectifier, filter and voltage regulator to prevent battery undercharge or circuit maintain. When the output current of battery is less than the preset value, the power source of white LED lamp will be switched over to spare AC power supply loop by the comparative and switching circuit.

用太阳能板，在日间吸收太阳光，将能源用DC-DC充电器储存於蓄电池中，夜间时由光感测控制电将蓄电池放电，提供白光LED灯所需的电源，为预防阴雨天蓄电池充电足或电故障维修，将使得灯无法点，另有市电经变压器与整稳压后之预备供电回，於蓄电池输出电低於预设值时，将白光LED灯电源换至市电预备回。

Mr. Putin said there were signs of genocide against the Ossetian people.

普京说，有迹象表明对南奥塞梯人进行了种族清洗。

What I'm trying to say, Tristan is...

特瑞斯坦。我想说的是。