查询词典 frequency conversion

The single a machine that should design to adopt serieses MCS-51s primarily conduct and actions main a measurement for, passing spreading feeling machine to the current of air measuring, its change is homologous pulse signal, this pulse signal through A/ D conversion with D/ A conversion after produce the certain electric voltage signal, will show the inceptive pulse signal a discharge for representing to come out at the same time.

该设计主要采用了MCS-51系列的单片机作为主要的芯片，通过传感器对燃气流量的测定，将其转变为相应的脉冲信号，这个脉冲信号经过A/D转换和D/A转化之后产生一定的电压信号，同时会将起初的脉冲信号所代表的流量显示出来。

The results show that smaller height of reaction channel can shorten the time which reactants diffuse from channel to reaction surface, longer length of micro-channel can extend residence time of reactants on the catalyst surface, and consequently increase the methane conversion and hydrogen production. The pressure drop between inlet and outlet increases lineally with the increasing of length, while the height influences the pressure drop significantly when the height is less than 0.4 mm. Based on the overall consideration for the methane conversion and resistance characteristic generally, the suitable height of channel should be between 0.4 mm and 0.6 mm.

结果表明：较小的通道高度能够减小反应物在通道中的扩散时间，较长的反应通道长度能够增加反应物与催化剂的接触时间，甲烷转化率和产氢率提高；通道长度线性地影响微通道进出口压降的大小，而在通道高度小于0.4mm时，通道高度显著地影响进出口压降的大小；综合考虑微通道的重整性能和进出口压降等因素，通道高度在0.4~0.6mm之间较为合适。

The project is proposed to improve the scale parameters of method 2 coordinate system conversion and a reasonable assessment of the local coordinate system to achieve local and national geodetic coordinate system conversion, changing the original control net all kinds of construction projects can only choose to independent local coordinate system, but not with the national geodetic datum unification.

该项目提出用改进的尺度参数法进行两坐标系的合理转换与评估，实现了地方局部坐标系与国家大地坐标系的转换，改变了原来各类工程建设控制网只能选择地方独立坐标系，而不能与国家大地基准统一的局面。

MACR and MVK continued to react with ozone to form MG and other products and disappeared finally under the experimental conditions, so their yields relative to isoprene conversion were variable along the reaction time, with the maximum yields observed as 0.33±0.02 for MACR and 0.21±0.02 for MVK respectively. MG, HCHO, HCOOH, CO and CO2 are inactive to ozone, and their final yields relative to isoprene conversion were 0.48±0.03, 0.87±0.03, 0.49±0.03, 0.60±0.03 and 0.65±0.10, respectively.

由於MACR和MVK继续与O3反应直至完全，它们的产率随时间而变化，反应过程中观测到的最大产率分别为0.33±0.02和0.21±0.02；而MG，HCHO，HCOOH，CO和CO2不与O3发生反应，最终产率分别为0.48±0.03，0.87±0.03，0.49±0.03，0.60±0.03和0.65±0.10。

Under the small-signal approximation, the effects of the waveguide length and the response flatness on DFG-based wavelength conversion are investigated by use of matrix operator, and then a feasible scheme to expand conversion bandwidth and pump bandwidth is proposed.

在小信号近似条件下，利用矩阵计算的方法分析了波导长度和转换效率的波动性对基于差频效应的波长转换器带宽的影响，给出了扩展信号光转换带宽和抽运带宽的优化设计方案。

Based on analyzing the separation detection conditions of imperfect superposition holes and the measurability of ballistic coordinates,the method of automatic measurement was presented on the basis of distance conversion,which is a successful application of distance conversion and watershed.

在分析了不完全重合弹孔的可分离检测条件、弹道坐标可测性的基础上，提出了基于距离变换的弹道坐标自动测量方法，是距离变换分水岭方法的一种成功应用。

The intelligence of analogy conversion in translation generation behaviors in word sense disambiguation, context-sensitive process, and word's metaplasm, which helps to eliminate the blindness of analogy conversion and realizes the intelligent analogy translation.

基于规则语言分析在译文生成中的启发作用体现在多义选择、上下文相关处理以及词形变换等处理上，启发信息有助于克服类比译文构造操作中的盲目性，实现类比翻译处理的智能性。

The highest conversion efficiency of DSSC is 4.8%. Mixing Ag-island and Degussa-P25 directly could avoid the agglomeration, and increases the short current. But "Uniform" is a problem of Mixing. The conversion efficiency of DSSC is 4.0%.

以添加直接还原之银粉制作阳极，虽然可避免无电镀法镀银时之粉末团聚现象，因此能增进短路电流值并提高光电转换效率，但是会造成银粉混合不均匀而无法进一步探讨，光电转换效率最高可达4.0%。

The contribution rate of land conversion to economic growth is 8.42% and the contribution rate of land conversion to nonagricultural labor force is 24.73%.

随后，本文对农地非农化对经济增长的显性贡献率以及农地非农化对非农劳动力的贡献率进行计算，分别为8.42%和24.73%。

Chapter five examines the process and reasons of Constantine's conversion to Christianity and the officialization of Christianity. It also discusses the significance of this conversion on both Early Christianity and the Roman Empire.

第五章，分析了君士坦丁皈依基督教及基督教官方化的过程及其原因，以及这一转变对基督教和罗马帝国双方的深刻影响。

In the chapter 2, the theoretic knowledge about the photosensitive resin and the grinding tools was firstly introduced.

第二章阐述了光固化树脂结合剂磨具的相关理论研究。

Do not use the program's indenting or margin-setting features; these will be added during typesetting.

不要使用缩排，页面边缘设置之类的选项，偶看不大懂。