栅

Good mathematical optimum design method is very important for improving the performance of cascades.

叶栅的数值优化设计方法对于提高叶栅性能、缩短叶栅设计周期和降低设计成本具有非常重要的实用价值，目前已成为叶栅设计研究领域中一个非常活跃的。。。

This ceiling-buried air conditioner comprises a grill frame 3 having an outlet port 6 and a suction port 5 provided at the lower end of a body 2 to be buried in a ceiling, a suction grill 4 provided on the suction port of the grill frame 3, a pre-filter 8 for purifying sucked air detachably set on the suction grill 4, and a lifting device 12 capable of lowering the suction grill 4 and the pre-filter 8 integrally to a filter replacement position.

其在埋设于顶棚内的主体(2)的下端设置具有排出口(6)和吸入口(5)的格栅框(3)，在该格栅框(3)的吸入口(5)上设置吸入格栅(4)，在该吸入格栅(4)上可拆装地设置用于净化吸入空气的粗滤器(8)，并设置可使所述吸入格栅(4)和粗滤器(8)整体地下降到更换过滤器的位置的升降装置(12)。

A prediction model has been proposed to deal with threshold voltage shift as a function of 1MeV neutron flux and gate oxide thickness, and to deal with room-temperature annealing of threshold voltage shift induced-by 〓Coγ as a function of electric field and gate oxide thickness. The commonness and individuality of MOS device degradation between hot-carrier effect and ionizing radiation were investigated. The dependence of substrate current, gate current and threshold voltage shift due to hot-carrier on gate oxide thickness were simulated with MEDICI-2D simulator. The photocurrents of PN junction and bipolar transistor were studied. Their transient responses on varied bias voltages, pulse durations and absorbed doses were simulated. The influences of NPN base width on base and collector photocurrents were investigated. We also studied 1MeV neutron displacement damage in PN junction, and calculated reverse current leakage under the neutron flux of 2. 67×10〓 per square centimeter. 3 The study of nondestructive screening method for MOS radiation tolerance A theoretical and experimental study of nondestructive screening methods for radiation tolerance of nMOS and pMOS were firstly fulfilled. We determined the informative parameters pertinent to the method and proposed how to deal with experimental data and verify obtained results statistically, as well as make the required steps for nondestructive screening. Based on the experimental data of 180 samples of discrete pMOS devices, the relation between sample quantity and correlation coefficient, screening equation, and other significant results were obtained from the threshold voltage shifts of pre-and post-irradiation samples.

二、分立器件电离和位移辐射损伤响应研究在国内首次开展了电离辐射引起的氧化层阈值电压漂移和退火理论研究，编程计算了1MeV中子引起的MOS器件阈值电压漂移与中子通量及栅氧厚度的关系，计算了〓Coγ光子引起的阈值电压漂移及退火的时效曲线与纵向电场和栅氧厚度的关系等，对评估MOS型集成电路电离损伤和加固方法研究，以及论文中开展的MOSFETs无损筛选方法研究奠定了基础；分析了MOS器件热载流子损伤效应与辐射电离损伤效应之间的异同性，利用二维模拟软件MEDICI-2D模拟了衬底电流和栅电流，在不同栅氧厚度下随栅压的变化曲线，计算了热载流子效应造成的阈值电压漂移，研究结果对当前存在的以热载流子效应研究取代电离辐射损伤实验研究的设想，具有重要的参考价值；开展了PN结和双极晶体管电离光电流研究，计算了不同偏压、不同辐射脉宽和不同吸收剂量下PN结光电流的瞬时响应，计算了不同辐射脉宽下NPN晶体管基极电流和收集极电流的瞬时响应，以及基区宽度对NPN晶体管光电流的影响，研究结果对双极器件抗电离辐射损伤响应及加固方法研究具有重要意义；在国内首次开展了器件位移损伤的理论研究，分析了辐射产生的缺陷对电性能的影响，计算了注量为2.67×10〓cm〓的1MeV中子产生的缺陷对PN结反向电流的影响。

The main products of our company:fiberglass geogrid,polyester geogrid,steel plastic geogrid,bidirection geotechnical geogrid of plastic,unidirection geotechnical geogrid of plastic,PP plastic geogrid,HDPE plastic geogrid,geosynthetic clay layer,geocloth,geomembrane,short cutting felt of fiberglass,polyethylene geogrid,polypropylene geogrid,geolattice,three dimention vegetation network,soft penetrated tube.

本公司主要产品包括：玻纤土工格栅、经编涤纶土工格栅、钢塑复合土工格栅、双向塑料土工格栅、单向塑料土工格栅、PP塑料土工格栅、HDPE土工格栅、膨润土复合防水垫、土工布土工膜、玻璃纤维短切毡、聚乙烯土工格栅、聚丙烯土工格栅、土工格室、三维植被网、软式透水管。

The main products of our companyfiberglass geogrid,polyester geogrid,steel plastic geogrid,bidirection geotechnical geogrid of plastic,unidirection geotechnical geogrid of plastic,PP plastic geogrid,HDPE plastic geogrid,geosynthetic clay layer,geocloth,geomembrane,short cutting felt of fiberglass,polyethylene geogrid,polypropylene geogrid,geolattice,three dimention vegetation network,soft penetrated tube.

本公司主要产品包括：玻纤土工格栅、经编涤纶土工格栅、钢塑复合土工格栅、双向塑料土工格栅、单向塑料土工格栅、PP塑料土工格栅、HDPE土工格栅、膨润土复合防水垫、土工布土工膜、玻璃纤维短切毡、聚乙烯土工格栅、聚丙烯土工格栅、土工格室、三维植被网、软式透水管。

The main products of our company:fiberglass geogrid,polyester geogrid,steel plastic geogrid,bidirection geotechnical geogrid of plastic,unidirection geotechnical geogrid of plastic,PP plastic geogrid,HDPE plastic geogrid,geosynthetic clay layer,geocloth,geomembrane,short cutting felt of fiberglass,polyethylene geogrid,polypropylene geogrid,geolattice,three dimention vegetation network,soft penetrated tube.

具体说明：本公司主要产品包括：玻纤土工格栅、经编涤纶土工格栅、钢塑复合土工格栅、双向塑料土工格栅、单向塑料土工格栅、PP塑料土工格栅、HDPE土工格栅、膨润土复合防水垫、土工布土工膜、玻璃纤维短切毡、聚乙烯土工格栅、聚丙烯土工格栅、土工格室、三维植被网、软式透水管。

The main products of our company:fiberglass geogrid,polyester geogrid,steel plastic geogrid,bidirection geotechnical geogrid of plastic,unidirection geotechnical geogrid of plastic,PP plastic geogrid,HDPE plastic geogrid,geosynthetic clay layer,geocloth,geomembrane,short cutting felt of fiberglass,polyethylene geogrid,polypropylene geogrid,geolattice,three dimention vegetation network,soft penetrated tube.

山东大庚玻纤有限公司本公司主要产品包括：玻纤土工格栅、经编涤纶土工格栅、钢塑复合土工格栅、双向塑料土工格栅、单向塑料土工格栅、涤纶dty是什么PP塑料土工格栅、HDPE土工格栅、膨润土复合防水垫、土工布土工膜、玻璃纤维短切毡、聚乙烯土工格栅、聚丙烯土工格栅、土工格室、三维植被网、软式透水管。

On the basis of experiment analyses we would got that, When arc met with chute, it was blocked and had a stagnation, this made hot gas flow incrase near the chute; After arc went into the chute, mental vapor from arc root would lower the dielectric strength near the chute, meanwhile, High value of arc voltage and the corase face of the chute made electric strength increase. These factors might give rise to local restriking near the chute, and made arc voltage drop suddenly.

总结实验结果并加以分析，本文提出了这样的观点：电弧进入栅片时，在入口处受阻后的停滞，会使该区域的热气流增加；进入栅片后，弧根蒸发的金属蒸汽、电弧热气流会降低栅片入口区域的介质强度；电弧被栅片分割后，电压急剧上升，再加上栅片表面的不均匀会使局部区域的电场强度显著增加，这些因素的综合作用会导致电弧在栅片入口附近发生局部重击穿，引起电弧电压电压跌落。

The invention discloses a high-voltage N-type metal oxide semiconductor, including a P-type substrate, a P-well drift region and an N-type drift region are arranged on the P-type substrate, a P-type contact hole, an N-type source and a field oxide layer are arranged on the P-well, an N-type drain and the filed oxide layer are arranged on the N-type drift region; the invention is characterized in that the thickness a grid oxide layer part which is positioned above the P-well is smaller than the grid oxide layer part which is positioned above the N-type drift region and a thin grid oxide layer and a thick thin grid oxide layer are respectively formed accordingly, a P-type impurity injection region is arranged in the P-well, and the P-type impurity injection region is positioned below the thin grid oxide layer.

本发明公开一种高压N型金属氧化物半导体管，包括P型衬底，在P型衬底上设有P型阱和N型漂移区，在P型阱上设有P型接触孔、N型源及场氧化层，在N型漂移区上设有N型漏及场氧化层，其特征在于位于P型阱上方的栅氧化层部分的厚度小于位于N型漂移区上方的栅氧化层部分并由此分别形成薄栅氧化层和厚薄栅氧化层，在P型阱内设有P型杂质注入区且该P型杂质注入区位于薄栅氧化层的下面。

When the positive curving angle increases, the total losses of cascades increase, the outlet flow angles vary acutely along the spanwise, the intensity and size of outlet trailing vortex increase obviously, however the intensity and scale of outlet passage vortex vary slightly, secondary flow at both midspan and endwall increase and the total averaged kinetic energy of secondary flow increases..

随着叶片正弯曲角的增大：叶栅总损失增加；叶栅出口气流角沿叶高剧烈变化；叶栅出口尾缘涡的强度和尺度明显增大，而叶栅出口通道涡的强度和尺度变化都不大；叶栅中部和端部二次流均增强，总平均的二次流动能增大。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。