末级

It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

The transmit part adopts the phase-locked loop pattern of frequency synthesizing technology and uses the MC145152 and MC12022 chips to compose the phase-locked loop.It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

We simulate the circuit with the Agilent ADS, After select the most suitable topology structure of circuit,we simulate the biasing circuit,input and output matching circuit. Through the method of the small signal s parameters and the nonlinear designing method, we design and simulate the drive stage and last stage power amplifier with ADS software, point out some problem in the design procedure.

设计软件采用Agilent ADS软件进行仿真设计，在选定合适的拓扑结构后，对放大器的静态偏置点、输入输出匹配电路进行仿真，通过应用小信号S参数设计方法和非线性设计方法分别设计了驱动级和末级放大器，指出了设计过程中的一些问题。

Bracteole apex 1-pinnate/pinnatifid; ultimate leaf segments lanceolate, 0.5–5 mm broad; pedicels terete.

Bracteole 顶1回羽状/羽状半裂；披针形的末级叶裂片，宽的0.5-5毫米；花梗圆柱状。

Hold a carry bit from the last stage of the adder. It stores these values in

通常，检验寄存器从加法器的末级获得一个进位。

Ultimate leaf segments 5–10 mm, toothed or lobed; fruit vittae 4–8 on commissure.

末级的叶裂片5-10毫米，齿或浅裂；在合生面上的果油管4-8。

In order to solve the problem of lack of thrust termination devices,a device to adjust the burnout angle will match the final burnout velocity and satisfy the desired range.

为解决无推力终止装置的末速不准问题，可在末级发动机采用姿态调整装置，对射角进行调整，配合末速以满足射程要求。

A high-speed digital signal driver used in data communication system is composed of a main drive unit containing the CMOS inverters at preceding and final stages and a feedforward and positive feedback unit containing the CMOS inverters at the first and the second stages and the forestage CMOS inverter is said main drive unit.

本发明涉及一种用于数据通信系统的高速数字信号驱动电路，其包括：含有前级CMOS反相器和末级CMOS反相器的主驱动单元，含有第一、第二级CMOS反相器及所述主驱动单元的前级CMOS反相器的前馈和正反馈单元。

For LP casing of 50MW air cooling units,the internal 3-D flow field of the off-design simulated with Fine/Numeca,a 3-D CFD software,is introduced.

详细分析各工况下的三维流场信息，结果显示背压变化对末级的影响比较大，在高背压、小容积流量工况下，在末级动叶中部出现较大的分离区。

New Vertical multi-level fire pump in the water level at the end of paragraph does not set guide vanes, the water level by the end of impeller directly discharged into the water of the scroll-shaped channel, and then discharged from the outlet.

新型立式多级消防泵在出水段没有设置末级导叶，水由末级叶轮排出后直接进入出水段的蜗壳形流道，然后由出水口排出。

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％。