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Compound semiconductor devices are key parts of RF communication applications because they have advantages of high electron mobility, high working frequency, low RF loss, high linearity and low noise. It is so-called "pHEMT" for full name "Pseudomorphic High Electron Mobility Transistor".

中文摘要Ⅲ-Ⅴ族化合物半导体材料所制成之元件，具有高载子迁移率、工作频率高、射频损耗低、高线性度、低杂讯等优势，使得Ⅲ-Ⅴ族化合物半导体元件成为现今射频通讯应用之关键部份。pHEMT为假晶高电子迁移率电晶体之简称。

Finally, measures and suggestions for solution were proposed aiming at these problems of secondary and primary school teachers in Wuchuan county . 1. Reform of the personnel distribution system and whole staff engagement system should be performed as soon as possible 2. System of selection of high and elementary schoolmasters should be reformed, perfecting schoolmaster responsibility system, reducing organization refinedly, compressing non-teaching personnel proportion, improving administration level of school. 3. Taking powerful measures to stabilize high and elementary school teacher"s team. 4. Executing "the Excellent Teacher Project of Century" to train all teachers, building teachers training mode according to current county"s practices and school"s characteristics to improve teachers" quality. 5. Increasing the adjustment for deployment and optimizing teachers resource configuration to improve the quality of elementary education. 6. Introducing talents actively and strengthening high school teacher team"s construction to satisfy the needs of the development of high school education.7. Strengthening teachers" moral education to improve teachers professional moral level.

最后，针对武川县中小学教师队伍中存在的这些问题，提出了解决的对策与建议：加快人事分配制度改革，全面推行教职工全员聘用制；改革中小学校长选拔任用制度，进一步完善&校长负责制&，精简机构，压缩非教学人员比例，提高学校的管理水平；切实采取各种有力措施，稳定中小学教师队伍；实施&跨世纪园丁&工程，进行全员教师培训，建立符合本县实际和学校特色的教师培训模式，提高教师队伍的整体素质；加大布局调整力度，优化教师资源配置，提高基础教育的质量；积极引进人才，加强高中教师队伍建设，以满足高中教育发展的需求；加强师德教育，提高教师的职业道德水平。

At this point, control circuit control high-power switch will be presented in a high-voltage direct-current high-frequency batch sent to high-frequency transformer primary and went on to the secondary loop after ventriclar hifrequency rectifter-voltage alternating current, by filtering is converted to a low-voltage stoichiometrical DC.

此时，控制电路控制大功率开关将高压直流电按照一定的高频频率分批送到高频变压器的初级，接着把从次级线圈输出的降压后的高频低压交流电，通过整流滤波转换为低电压强电流的直流电。

objective:to investigate the influence of soybean isoflavones on the antioxidative effect and improving the ability of study and memory in climacteric rats.methods:forty-eight female sd climacteric rats were randomly divided into 4 groups with one control group and the other low,medium and high dose groups,which were given soybean isoflavones 0 mg/kg.bw,42 mg/kg.bw,83 mg/kg.bw and 249 mg/kg.bw by superalimentation daily for 60 days respectively.the levels of sod,gsh-px and mda in serum were measured,and the ability of study and memory in each group was deterimined by adopting the law of diving platform.results:the content of serum mda in medium and high dose groups was lower than that in control group.the activity of serum gsh-px im medium and high dose groups was significantly increased,so was the activity of serum sod in low,medium and high dose groups.conclusion:soybean isoflavones do have the obvious effect of antioxidation,and improve the ability of study and memory effectively in female sd climacteric rats.

目的：观察大豆异黄酮对更年期雌性sd大鼠抗氧化作用及学习记忆的影响。方法：选用健康更年期雌性sd大鼠，随机分成空白对照组和低、中、高剂量4组。空白对照组给予蒸馏水，实验组每日分别灌服42、83、249 mg/kg剂量的大豆异黄酮，连续60d。第60d取血测定血清过氧化脂质丙二醛含量、超氧化物歧化酶活力、谷胱甘肽过氧化物酶活力，用跳台实验方法测定大鼠学习记忆能力。结果：与空白对照组比较，中、高剂量组大鼠血清mda含量显著降低，低、中、高剂量组血清sod活力明显升高，中、高剂量组血清gsh-px活力明显升高。结论：大豆异黄酮具有明显的抗氧化作用，并有效提高更年期雌性sd大鼠的学习记忆能力。

Longyan City of intensive breeding of fine strains unity, unity over the winter Tian Rong soil, soil testing uniform formula to balance fertilization technology, unified tectorial to be planted, planting density of unity, reunification of the high-Jiemo earth to fight to stay top of leaves, early reunification of the lower part of the leaf mining Admission, the reunification of the upper leaves with stroke recovery, unity,"three-step" baking technology, the production of flue-cured tobacco has shown "a high level of scientific research and development, the outcome of a high conversion rate, high economic efficiency, operation and management of the new mechanism".

龙岩市统一优良品种集约化育苗、统一冬翻溶田改良土壤、统一测土平衡配方施肥技术、统一盖膜待栽、统一种植密度、统一揭膜高培土打顶留叶、统一下部烟叶提早采收、统一上部烟叶带杆采收、统一&三段式&烘烤技术，烤烟生产呈现出&科研开发水平高、成果转化率高、经济效益高、经营管理机制新&的局面。

The results were as follows: ET〓-RNA expression levels in hypothalamus, hippocampus and temporoparietal grey and white matters of the low and high speed injury groups were elevated significantly than that of control group (p＜0.05), but in the above areas of brain, ET〓-RNA expression in hypothalamus and hippocampus were the highest (p＜0.01), especially in the high speed injury group; ET〓 contents in hypothalamus and hippocampus in the two injury groups, especially in the high speed injury group, increased very significantly than that of control group (p＜ 0.01); ET〓 contents in CSF and plasma in the two injury groups, also especially in high speed injury group, increased markedly after 2 hours, and lasted for 8 hours after injury; ET〓 contents in the abovt areas of brain were of highly positive correlation with that in plasma or in CSF.

实验显示：致伤犬伤后海马、丘脑下部、颞顶叶灰、白质内皮素—1RNA表达较对照组显著增强（p＜0.01，p＜0.05），其中以海马和丘脑下部最显著（p＜0.01），高速组最明显（p＜0.01）；海马和丘脑下部ET〓含量较对照组显著升高（p＜0.01）；血浆、CSF中ET〓含量在伤后2h即极显著升高（p＜0.01），并持续至伤后8h，上述各组均以高速组最为显著（p＜0.01）；各脑区和血浆，CSF中ET〓含量间呈显著正相关。

The servo controller regards TI Company DSP chip TMS320LF2407A as the main chip,has adopted standard ISA bus structure,has high -integration and high-agility,has accomplished in real-time complex boolean calculation and control algo- rithms during motion control,and can be used to realize high-speed and high-accuracy servo control for mul- tiple axis.

O前言以DSP为核心的多轴伺服控制器越来越广泛地应用在运动控制系统中，上位机只需对被控对象实施总体的控制和管理，而位置反馈信号的采集，闭环控制计算及控制量的输出均由伺服控制器完成，具有运算速度快，支持复杂的运动算法的特点，能实现高速度、高精度的位置伺服或轨迹

Karatsu take high-speed, and then switch to high-speed Beijing-Tianjin-Tanggu, in Yixing Bu under the high-speed, and then take the Outer Ring Road in Tianjin, more than 10 minutes after taking Tsubo high-speed, it is up!

走唐津高速，然后转京津塘高速，在宜兴埠下高速，然后走天津外环线，十多分钟后，走津保高速，就到了！

On the basis of the summarization of MCM-Cs main features and its assembly and packaging technologies, the paper puts stress on relatively deepgoing studies in practically advanced MCM-C assembly process technologies as gold ball wire bonding, IC chip gold ball stud bump making, IC flip chip bonding and underfilling, in high reliability MCM-C packaging process technologies as integral LTCC substrate packaging, hermetically metal sealing, and also in the basic technological process of MCM-C assembly and packaging. Later on, it presents the effectively engineering development of two high level actual module products--a high-density monolithic processor system MCM-C , a high-speed data collecting and processing system MCM-C. Lastly, it briefly introduces various common methods of quality inspection and reliability test of MCM-C assembly and packaging in engineering practice.

论文在综述MCM-C的主要特点及其组装封装技术的基础上，重点对金丝球引线键合、IC芯片金球凸点制作、IC芯片倒装焊与下填充等实用先进MCM-C组装工艺技术和LTCC基板与外壳及PGA引线的一体化封装、气密性金属封装等高可靠MCM-C封装工艺技术以及MCM-C组装封装基本工艺流程展开了较深入的研究，有效完成了高密度单片机系统MCM-C和高速数据采集控制系统MCM-C等两种高水平实际产品的工程化研制工作，扼要介绍了工程实践中MCM-C组装封装工艺常用的质量检验方法和可靠性试验方法。

The result shows that the 0503 ripes earlier and suits to be a cultivar of Zizania caduciflora reaped earlier than usual in spring. The 0501 also ripes a little earlier, so the 0503 and the 0501 both suit to be cultivars of Zizania caduciflora reaped earlier than usual in autumn. The 0504, the 0505 and the 0506 all have high yield, in some special situation they can be planted in flowing cold water or planted in high hills to harvest earlier in fall. Thought of the reap time, the yield, the quality of the appearance and the quality of the nutrition, the 0504, the 0505 and the 0506 have high yield and high quality, which can be spread and exported.

结果认为双季茭0503具有早熟特性，适宜作为春早熟栽培品种；单季茭0501也具有较早成熟的特性，和0503均适宜作为露地秋早熟栽培品种，而较为丰产的0504、0505、0506在条件允许时可以进行冷水栽培或高山种植，实现秋早熟；综合熟期、产量、外观品质、营养品质等各方面进行比较，认为0504、0505和0506丰产优质，适宜常规种植推广，并可出口创汇。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。