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Sub-band high-speed circuits of the past are the use of silicon bipolar and gallium arsenide process design, they have a certain speed on appeal. However, leads the prevalence of large and expensive power shortcomings.

高速的分频电路过去大都采用双极性硅工艺和砷化镓工艺进行设计，它们在速度上有一定的吸引力，但普遍存在功耗较大及价格昂贵的缺点。

Previous work of this research group produced high quality and stable silicon dioxide (SiO/sub 2/) film on gallium arsenide substrates by liquid phase deposition at room temperature.

本研究群先前已以液相沉积法在室温下成长高品质及高稳定度的二氧化矽膜。

As a sub-cultural group,gangland has its own psychological features,which decide its behavioral patterns.

黑社会作为一个亚文化群，有其独特的心理特征，而这种心理特征又决定了其组织行为方式。

The experiment studies of the gas-charge experiment of the gasbag and the throwing experiment of the sub system have been carried out, then find out the effect of the correl...

分别对分系统和全系统进行了分析，研究机载布撒武器结构参数对抛撒技术指标的影响，通过对抛撒系统结构性能的实验和理论研究，完善抛撒系统的设计方案。

To assist in your mission, you will have access to an arsenal of handheld weapons including sub-machine guns, gatling guns, energy weapons and grenades.

特点 -为你的任务做准备，你可以进入一个军工厂，那里制造半自动步枪，机关枪，激光枪和手雷。

The design of the device using NC Lathe CA6140 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with. from the I / O interface stepper pulse output signal to control the feed rate and itineraries; In order to maintain the function of cutting thread, to the outer end of spindle or other appropriate location loaded pulse generator; Lathe will be transformed into Tailstock manually controlled electric Tailstock.

本设计利用数控装置对CA6140普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

Aerotech positioning stages range from economical ball-screw and gear-driven linear and rotary stages to the highest performance direct-drive linear and rotary stages available; linear-motor-based Cartesian gantry systems; single and multi-axis air-bearing systems; and our complete range of nanopositioning stages.

再往上一层，Aerotech提供精密的运动平台，从精度为micron等级的线性马达平台，直驱马达平台，自精度等级为sub-micron的空气轴承平台均有提供，最近更推出ANT系列长行程奈米定位平台，提供丰富的产品线。

The design of the device using NC Lathe CA6240 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with.

本设计利用数控装置对CA6240普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

Results In both groups after injury, several changes on oculomotor nerve occurred including number reduction of neurons, dispersion in distribution, disappearance of sub-nuclear structure, structure destruction of fibers and myelin sheath, neurite gemmation, and specificity decrease in fibers distribution, while all these changes in section-suture group were more obvious.

结果 不同损伤均可导致神经元的数量减少，分布散乱，亚核分布结构改变，神经纤维和髓鞘的结构破坏，轴突芽生及再生纤维分布的特异性降低，而且上述改变在神经切断组更加明显。

The fifth chapter combines the characteristic of physics teaching and study theory to divide the general evaluation aims into many sub items, and form a general table of valuation index system .

第五章结合物理教学的特点，以学习理论作指导，将评价总目标分解为各评价子项，形成了评价指标体系总表。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。