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The area is small to the highest ( conversion efficiency 13 - 15%, some have achieved more than 20%) of monocrystalline silicon solar energy cell conversion efficiency, and output power is big, and stability is good, grows ( generally can reach more than 20 years ) service life, but the raw and processed material cost height, the weak light specific property is wronger, and production technology is complicated, hence the selling price is also higher; The polycrystalline silicon solar energy cell is basic identical with the function characteristic of monocrystalline silicon solar energy cell; The conversion efficiency of non- brilliant silicon solar cell than hangs down ( simples about 6 - 8%), the area is than greatly, but because of his raw and processed material cost than hanging down, can be easy to big area industrialize production, what will have hope to be used the generally big area to generate electricity from now on most will be this kind of application that battery is along with manufacture technique and new material, in a single day the practical package photoelectricity conversion efficiency of its big area achieves more than the 10-15%, and the price of every tile electric power-generating equipment is fallen 1 - 2 U.S.dollar of time, and just is enough to that the solar energy cell efficiency that big area the getting extensive use will constantly replace in now convention certainly special use and the laboratory of sources of energy s will high get many.

单晶硅太阳能电池转换效率最高(转换效率13~15%,有的已达到20%以上),面积小,输出功率大,稳定性好,使用寿命长(一般可达20年以上),但原材料成本较高,弱光特性较差,生产工艺复杂,故售价也较高;多晶硅太阳能电池与单晶硅太阳能电池的性能特点基本相同;非晶硅太阳能电池的转换效率较低(约6~8%左右),面积较大,但因其原材料成本较低,可便于大面积工业化生产,今后最有希望用于一般大面积发电的将是这种电池。随着制造技术和新材料的应用,一旦它的大面积实用组件光电转换效率达到10-15%以上,每瓦发电设备的价格降到1~2美元时,便足以大面积得到广泛应用并将不断取代现在常规能源。当然特殊用途和实验室中的太阳能电池效率要高得多。

A7800 Features: 10 Mb s Manchester encoding decoding with receive clock recovery Patented digital phase locked loop decoder re- quires no precision external components Decodes Manchester data with up to g18 ns of jitter Loopback capability for diagnostics Externally selectable half or full step modes of opera- tion at transmit output Squelch circuits at the receive and collision inputs re- ject noise High voltage protection at transceiver interface (16V) TTL MOS compatible controller interface Connects directly to the transceiver cable A7800 Maximum Ratings: A7800 Pinout:· NPT IGBT technology · low saturation voltage · low switching losses · switching frequency up to 30 kHz · square RBSOA, no latch up · high short circuit capability · positive temperature coefficient for easy parallelling · MOS input, voltage controlled · ultra fast free wheeling diodes · solderable pins for PCB mounting · package with copper base plate

A7800特点: 10兆s曼彻斯特编码与接收时钟恢复专利解码数字锁相环解码器重新奎雷斯没有精确数据的外部元件曼彻斯特解码高达全部G18抖动纳秒环回功能用于诊断外部可选的一半或整步模式的歌剧和灰在传输和接收碰撞投入重新ject高噪音在收发器接口(16V的)马鞍山的TTL兼容控制器接口电压保护输出静噪电路直接连接到收发器的电缆 A7800最大额定值: A7800引脚说明:·不扩散核武器条约IGBT技术·低饱和电压·低开关损耗·开关频率可达30千赫·平方米RBSOA,没有锁定了高短路能力··正温度,便于parallelling·马鞍山消耗系数,电压控制·超高速免费·印刷电路板焊接的引脚安装·铜底板包续流二极管

The company has a twenty years experience in technology research and development team, through the introduction of foreign advanced technology, after several years of efforts to create a stable performance, high efficiency, low energy consumption, and prices reasonable MDN blowing machine series products.

公司拥有一支二十年研发经验的技术队伍,通过引进国外的先进技术,经过几年的努力,制造出了性能稳定、效率高、能耗低、性价合理的MDN吹瓶机系列产品。

In recent years, a new gas burner of low voltage and low caloric value was successfully developed.

简要分析了国内普遍使用的非预混式气体燃烧器的技术概况,着重介绍了近几年研制成功的新型低压、低热值煤气燃烧器的结构特征、技术特点及应用效果。

Abstract] objective to discuss the clinical meaning of the treatment of tibial plateau fracture by mipo and operation method.methods 34 cases of tibial plateau fracture with schatzker typeⅰ~ⅴ were treated by mipo during march 2005 to june 2007,then followed-up all the cases.results using mipo to treat the tibial plateau fracture in reducing bleeding and operating time,all cases had no tresis vulnus infection and necrosis,no fracture disunion,no loosening and breaking of internal fixations,etc.the knees function regained well.conclusion treating tibial plateau fractures with mipo has little obstructe in environment of fracture healing through minimally invasive,has fortes of minimally invasive,firm of internal fixations,low rate of infection,high rate of fracture healing,can reduce the complications,fit principle of biologic fixation.

目的 讨论应用微创接骨板固定术在治疗胫骨平台骨折中的临床意义及手术方法。方法运用mipo技术治疗2005年3月~2007年6月34例schatzkerⅰ~ⅴ型胫骨平台骨折,并对其进行随访观察。结果运用mipo技术治疗胫骨平台骨折,手术时间短,术中出血量少,没有发生伤口感染坏死、骨折不愈合和内固定松动、断裂等并发症,术后患者膝关节功能恢复良好。结论 mipo在治疗胫骨平台骨折时以微创来提供尽可能少受干扰的骨折愈合环境,具有创伤小、固定确实、感染率低、骨折愈合率高等优点,减少了并发症的发生,符合生物学固定的原理。

Friction stir welding is a new solid state welding technique under the actions of mechanical forces and frictional heat. FSW has many advantages on the aspects of mechanical properties and producing efficiency, such as high strength, low defect, no pollution, etc. FSW can be used to join the buttcover plate and lap jointed sheeting of many materials, such as aluminium alloy, magnesium alloy, copper alloy, etc.

搅拌摩擦焊接是一种在机械力和摩擦热作用下的新型固态焊接技术,在接头力学性能和生产效率上具有较高的优越性,具有低缺陷、高强度以及环保等特点,同时,搅拌摩擦焊接技术可以对包括铝合金、镁合金、铜合金等多种材料的板状构件实现对接或搭接,另外,搅拌摩擦焊接可以较容易实现异种材料的连接。

Thermochemical Hole Burning memory uses the STM heating effect to induce a localized thermochemical decomposition of Charge Transfer Complexes, evolving the low-boiling point donor component and creating nanometer-sized holes on the crystal surface. In this thesis, we focus our research on the material synthesis and storage mechanism of THB memory.

热化学烧孔(Thermochemical Hole Burning,THB)技术是基于STM的超高密度信息存储技术,它利用STM针尖产生的隧道电流或场发射电流的焦耳热效应,诱导二元电荷转移复合物材料发生局域热化学气化分解反应,使低沸点组分从样品表面逸出,形成纳米尺度的信息孔。

For all countries, developing countries in particular, the decline in their consumption of natural resources depends, to a large extent, on their ability to absorb low-consumption production techniques.

因为只有当采取那些对自然资源和环境服务要求较低的新技术来取代自然资源密集型的旧技术成为可能时,经济结构的转换才能得以真正实现,同时那些旨在消除自然资源市场价格扭曲现象进而保护环境的政策才有可能真正发挥作用。

All of the studies in this paper, including the study of leaching behavoirs of HLW glass under repository conditions, low oxgen and multi-barrier media; the geochemical model PHREEQC used for calculating the leachate compositions and sediment phases on the glass surface; A Monte Carlo model established and used for study of leaching behavior of HLW-glass; as well as the high-temperature self-propagating synthesis used for immobilization of Sr element in perovskite synroc, are the front research works of this field in the world, and obtained some significative results in theory and practice.

本研究所作的高放废液玻璃固化体在模拟地质处置条件下(低氧条件和多种地质介质)的浸出行为研究,采用了低氧条件和多种模拟地质介质,包括北山预选厂址的花岗岩、膨润土、水泥和Fe〓O〓作为浸出介质,模拟地下水和去离子水作为浸出剂,90℃和150℃两种浸出温度;采用了地球化学模型PHREEQC(version2.7)研究玻璃固化体浸出液中主要元素的浓度以及沉积相的生成;采用蒙特卡罗法建立玻璃固化体的计算模型,对玻璃固化体的浸出行为进行研究;采用了自蔓延高温法固化锶,这些工作都是当前国际上比较前沿的研究课题,采用了先进的分析测试技术,并且作了大量计算,得出了理论上和实践上有意义的结果。

In order to make the right evaluation of the state which is the consumption consume of the steam line system, we make an test of the heat loss of the steam line network. And we also probe into the heat loss of the steam line system and the factors. In order to solve the heat inefficency of the steam line system, we look into the present situation of the steam line network and the state of heat preservation. Then we found the open questions and the weak points of heat preservation. We make the evaluation and affirm the reason of the heat inefficency of the system. We adopted the combination of bench test and engineering optimization, then we screened out high-quality adiabator, and designed the best heating composition. We designed and developed the software"The analysis and optimization of energy of the steam line system in thermal production" It can offer convenience to the computational analysis of heat loss of the steam line system. It can also be used for design calculation and experimental verification of steam pipeline feasible radial-radius, so it can offer technical support for the reduce of heat loss of the system, the raise of well head steam quality and the raise of heat efficicency of the steam injection system.

为了对输汽系统的用能状况作出正确的分析评价,对输汽管线热损失进行了测试计算,对输汽系统热量损失及影响因素进行了探讨;为了解决输汽系统热效率低的问题,从输汽管网现状及管道保温状况调查入手,掌握存在的问题和保温薄弱环节,做出分析评价,确认导致系统热效率低的原因,采用室内试验与工程优化相结合的办法,筛选出优质保温材料,设计最优保温结构,同时设计开发了&热采输汽系统能量分析及优化软件&,为输汽系统热量损失计算分析和保温结构优化提供了方便,还对输汽管线合理辐射半径进行了设计计算及实验验证,从而为降低系统的热能损失,提高井口蒸汽干度,提高注汽系统的热效率提供了技术支持。

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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

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