查询词典 high-keyed

A design and implementation method of the high speed modulation system, which adopted the new techniques of the FPGA and DAC based communication system,is presented in this paper. The effect of the key techniques of this system, such as the high speed digital signal processing for modulation, high speed based-band signal conversion, wide-band modulation, carrier suppression, high frequency and high precision system clock generation, is analyzed, and the solutions and performance analysis is also given. Finally, a high speed modulation system for space applications is implemented, can be used for high speed data transmission with QPSK, 8PSK, QAM or other kinds of digital modulation.

本论文依据正交调制原理，采用基于FPGA和DAC的设计技术，提出了一种高速、灵活的调制系统的设计方法，重点分析了系统组成的调制编码映射、基带脉冲信号转换、信号滤波、调制、系统时钟产生等关键技术环节的影响，解决了高速调制信号处理、高速数据转换、宽带调制、载波抑制、高频率高精度系统时钟的产生等关键技术问题，完成了一种适用于空间应用的高传输速率、多进制数字调制方式和调制体制灵活的数据传输调制系统的设计与实现，可在硬件设计不变的情况下，实现QPSK、8PSK和16QAM等多种调制方式的高速数据传输，QPSK调制速率达到500Mbps。

Decades, the system does not always produce pipes, tiles, cement products and other traditional rod, but the development should be high (high-strength, high pressure) and large, new (new building materials and products) as a key to develop new products In detail: to develop high-strength prestressed concrete pile; apply to set up more than 110 kilovolt high voltage transmission lines and electrified railway lines, etc. Catenary large t m poles; application of new high-speed heavy rail with pre-stressed concrete sleeper; high-pressure , large-diameter prestressed concrete cylinder pipe; steel concrete and prestressed steel-concrete composite pipe; new type of reinforced concrete pipes, such as the mouth and socket bearing steel reinforced concrete pipes, square pipes, short-shaped pipes, common drains ; reinforced concrete inspection and; urban and rural construction using a variety of hollow interior wall panels and composite wall panels, concrete hollow block.

不能几十年一贯制生产管、瓦、杆等传统水泥制品，更应把发展高、大、新作为重点开发新产品，具体讲：大力发展预应力高强混凝土桩；适用于架设110 千伏以上高压输电线路和电气化铁路接触网线路等的大吨米电杆；适用高速重载铁路用的新型预应力混凝土轨枕；高压、大口径预应力钢筒混凝土管；钢板混凝土和预应力钢板混凝土复合管件；新型钢筋混凝土排水管，如钢承口和承插式钢筋混凝土排水管、方型渠、短形渠、共同渠；钢筋混凝土检查并；城乡建设用的各种空心内墙板和复合外墙板、混凝土空心砌块。

This paper analyzed the balance precision and grade of high speed grinding wheel and its effect on grinding performance analyzed. The unbalance causes of high and super high speed grinding wheel were discussed too. The evaluation and selection for the balance precision of high and super high speed grinding wheel were studied. Furthermore, the paper analyzed the principle and significance of dynamic balancing technology of high and super high grinding wheel.

对高速转子平衡精度和等级及其对磨削性能的影响进行了理论分析，并深入讨论了超高速砂轮系统的不平衡因素，研究了超高速砂轮系统平衡精度的评价与选择方法，分析讨论了盘形高速和超高速磨削砂轮动平衡技术的原理和意义。

The technique problems such as quick charging of high voltage capacitor, uniform discharge in high pressure large aperture zone, uniform flow of high pressure gas, and laser resonator, high energy pulse output and high repetition pulse output, were solved by applications of ultraviolet preionization, two-circuit series and parallel discharge structure of graphite Ernst electrode, folded resonator that embodies super-thin water-cooled non-deforming mirror, closed circle direct cooling system of double loop and high-voltage high-current switch power supply.

采用紫外预电离双路Ernst石墨电极串并联放电结构、超薄水冷不变形镜折叠腔、双回路直冷式封闭循环流动系统和高压大电流快脉冲开关电源等技术，解决了高功率高压电容充电、高气压大体积均匀辉光放电、高气压高速均匀流场、激光谐振腔和高脉冲能量、高重复频率脉冲激光输出等技术难题。

By the use of Circling cluster and Envlopment theory and flat surface sit-mark transformation theory, the chain wheel tooth equation of roller chain at high speed to match conjugage engagement is deduced.Establishing chain speed equation of roller chain at high speed,based on the analysis of the speed curves between roller chain at high speed and common roller chain,good drive of roller chain at high speed is verificated theoretically.By a example that move distance from transverse vibration between roller chain at high speed and common roller chain is contrasted,the accuracy of those theories that the paper brings up and higher functions of roller chain at high speed is proved.Finally, Establishing conjugage engagement line equation of roller chain at high speed and analyzing the complete engagement zone, the chain wheel tooth curve equation is studied at a higher degree. At the same time,the lack's place of the research result is pointed out.

依据高速滚子链设计要求与H_y-V_0齿形链的研究，阐述了滚子链传动实现准共轭啮合理论可能性；利用圆族包络法结合平面坐标变换理论推导出了满足共轭啮合的高速滚子链的链轮齿廓曲线；建立起高速滚子链链速方程，通过对高速滚子链与普通滚子链链速曲线的对比分析，从理论上验证了高速滚子链具有良好的传动性能；最后，建立起高速滚子链共轭啮合线方程，对其整个啮合区间进行了分析，进一步研究了链轮齿廓曲线方程，确定了主要参数的设计方法的问题，并同时指出了不足之处。

The company is specialized in producing silicon rubber products manufacturer, produces silicon胶制品series of products with high transparency, high-strength liquid injection molding silicone rubber production technology, the introduction of more high-precision liquid silicone fired rubber plant, the establishment of a high standard of medical silicone rubber air-conditioning spare parts production workshop; products in addition to a general heat-resistant silicone rubber, cold resistance, weatherability, corrosion resistance and good electrical properties, but also can have Good electrical conductivity, high hardness and high tear strength and other properties.

本公司是专业生产硅橡胶制品的制造商，公司生产硅胶制品系列产品具有高透明，高强度的液体注射成型硅橡胶的生产工艺技术，引进更高精度的液态硅橡胶射出机台，建立高标准的医用硅橡胶零配件生产空调车间；产品除具有一般硅橡胶的耐热性、耐寒性、耐候性、耐腐蚀性及优良的电性能外，还可以有良好的导电性、高硬度和高撕裂强度等性能。

The newly established large Sunchang Products Co., Ltd. is the first professional production LSR liquid silicone injection molding rubber products manufacturer, produces silicon胶制品series of products with high transparency, high-intensity LSR Liquid injection molding silicone rubber production technology, the introduction of more high-precision liquid silicon fired rubber plant, the establishment of a high standard of medical silicone rubber parts production clean rooms; products in addition to a general heat-resistant silicone rubber, Cold resistance, weatherability, corrosion resistance and good electrical properties, but also can be a good electrical conductivity, high hardness and high tear strength and other properties.

刚刚成立的大淳昌制品有限公司是国内率先专业生产LSR液体注射成型硅橡胶制品的制造商，公司生产硅胶制品系列产品具有高透明，高强度的LSR液体注射成型硅橡胶的生产工艺技术，引进更高精度的液态硅橡胶射出机台，建立高标准的医用硅橡胶零配件生产无尘室；产品除具有一般硅橡胶的耐热性、耐寒性、耐候性、耐腐蚀性及优良的电性能外，还可以有良好的导电性、高硬度和高撕裂强度等性能。

The Company is the first professional production LSR liquid silicone injection molding rubber products manufacturer, produces silicon胶制品series of products with high transparency, high-intensity LSR liquid injection molding silicone rubber production technology, introducing Lim more high-precision liquid silicon fired rubber plant, the establishment of a high standard of medical silicone rubber parts production clean rooms; products in addition to a general heat-resistant silicone rubber, cold resistance, weatherability, corrosion resistance and Excellent electrical properties, but also can be a good electrical conductivity, high hardness and high tear strength and other properties.

本公司是国内率先专业生产LSR液体注射成型硅橡胶制品的制造商，公司生产硅胶制品系列产品具有高透明，高强度的LSR液体注射成型硅橡胶的生产工艺技术，引进更高精度的Lim液态硅橡胶射出机台，建立高标准的医用硅橡胶零配件生产无尘室；产品除具有一般硅橡胶的耐热性、耐寒性、耐候性、耐腐蚀性及优良的电性能外，还可以有良好的导电性、高硬度和高撕裂强度等性能。

Is a professional production of double-track high-speed textile machines and high-tech enterprises, the company integrates product development, manufacturing, sales and service as a whole, adhere to a high starting point, high demand, high-quality development of the road, in order to provide high-quality products and excellent service.

湖北十堰市日顺工贸有限公司是一家专业生产双轨道高速编织机的高新技术企业，公司集产品开发、制造、销售服务为一体，坚持高起点、高要求、高质量的发展之路，为用户提供优质的产品、优良的服务。

SiC is a very promising material for high temperature, high power, high frequency, and radiation application because of its superior properties such as wide band gap, high critical breakdown field, high thermal conductivity and high saturation electron drift velocity.

SiC材料具有宽禁带、高临界击穿电场、高热导率、高载流子饱和漂移速度等优良特性，这些特性决定了它在高温、大功率、高频和抗辐照等方面的有着广泛的应用前景。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"