查询词典 h.a.

The present dissertation deals with:(1) Exploring the feasibility of the CO〓 methanation and the conversion CH〓/H〓 into C〓 hydrocarbons under plasma with catalyst at ambient temperature and atmosphere.(2) Designing a reactor and preparing some catalysts suited for the conversion of carbon dioxide via the cooperation effect of plasma and catalysts.(3) Optimizing reaction conditions of conversion carbon dioxide to C〓 hydrocarbons in the proposed process.(4) Studying the reaction mechanism of conversion carbon dioxide to C〓 hydrocarbons under plasma by using in situ OES technology.(5) By the results of characterizing coked catalysts, exploring the reasons that result in the coking of catalyst and the paths for decreasing the deposit in the catalyst under plasma.(6) Analyzing the energy efficiency of the plasma catalysis and exploring the paths for improving the energy efficiency.

论文的主要研究工作包括：（1）探索脉冲电晕等离子体与催化剂共同作用CO〓／H〓甲烷化和由CH〓/H〓合成C〓烃反应的可行性；（2）研制等离子体催化CO〓转化的反应器和适配的催化剂；（3）优化等离子体催化CO〓转化制C〓烃反应的工艺条件和电参数；（4）利用原子发射光谱原位技术对等离子体反应的诊断结果，对等离子体催化CO〓转化制C〓烃反应的机理进行推断；（5）通过对积碳催化剂的表征结果，分析积碳的类型及其成因，并探讨减少积碳的途径；（6）通过对等离子体催化CO〓转化制C〓烃反应能量效率的分析，探讨提高等离子体催化反应能量效率的途径。

H-bridge switching power amplifiers are popular for their high efficiency and large power output.Based on analysis and experiments of mainstream DAA and DAPS, a 10W H-bridge power amplifier circuit is designed with JAZZ 0.5um BCD technology.

本文在分析国内外数字音频功放及后级开关功率放大器现状的基础上，采用JAZZ的0.5umBCD工艺，设计了一种高效率宽功率输出范围的数字音频H桥功率放大电路。

Based on the analysis of the requirements of H.323-SIP interworking, this paper presents a realization scheme for H.323-SIP interworking, and discusses the key problems necessary to be solved .

本文在简要分析 H.323和 SIP 互通要求的基础上，提出了两者互通的实现方案，并对互通需要解决的关键问题进行了讨论。

H.264/AVC is the new generation of video coding protocol with a higher efficiency,but the by-effect is increasing the complexity of the protocol H.264 codec.Thereby it is difficult to achieve the real-time application.

论文摘要： H.264/AVC是新一代的视频压缩标准，编码的压缩率很高，但带来的副作用却是编解码器复杂度的增加，从而很难达到实时的要求。

The results showed that O. fragrans seeds were desiccation-sensitive as the seed viability declined to 6% when the seed moisture content was reduced to 11.6%. The seed electrical conductivity increased with the declining moisture content, a sign, which was caused by increasing cell membrane cleavage. Superoxide dismutase activity decreased rapidly during desiccation; but peroxidase activity increased to the maximal value when dehydration for 12 h, then declined rapidly when seeds were dehydrated more than 12 h.

结果表明：'紫柄籽银桂'种子不耐脱水，种子生活力随着含水量的下降而降低，种子含水量下降到11.6%时，生活力仅为6%；自然脱水过程中，种子细胞膜系统受到损伤，相对电导率不断上升；种子内SOD活性随着含水量下降而呈总体下降的趋势；POD先呈波动性上升，脱水12 h时达到最大值，之后急剧下降。

Delta-shaped traps baited with virgin females in the field attracted (233±16.3) males per day, whereas traps containing virgin males attracted 0 female and (1±0.6) male per day, indicating the presence of a female sex pheromone in R. longicauda.

活体雌蚊诱捕器田间诱捕雄蚊(233±16.3)头／24 h，活体雄蚊诱捕器诱捕雌蚊0头／24 h、雄蚊(1±0.6)头／24 h，说明雌蚊对雄蚊有引诱作用，而雄蚊对雌蚊、雄蚊均无引诱作用，菊花瘿蚊由雌蚊释放性信息素吸引雄蚊交配。

Results The ERKs in myocardium treated with PTMR were activated at 2 hours and lasted to 24 hours, and the relative protein abundance of ERKs increased to a peak level from 24 hours to 7 days after operation, compared with sham-operated controls.

结果 与假手术对照组比较，PTMR实验组心肌组织内ERKs于2 h开始激活，持续至24 h；其蛋白含量于术后24 h开始升高并持续至术后7 d。

The main production facilities consist of four seafood production workshops (total building area is about 6950 square meters and storage capacity is about 4000 tons )and three quick freezing room which made up aluminum plate (10 tons /each batch) and one ice-making workshop (its daly output of 35 tons )and one ice storage (total building area is about 350 square meters)and two fresh-freeing installation (the processing capacity is 1500kg/h)and one tunnel quick-freeing installation (the processing capaciyy is 600kg/h)and two production lines for processing shrimp and two production lines for cooking seafood and two production lines for processing fish and one flake ice maker(its daiy output of 35 tons)The plant built a laboratory for testing product quality,which had equipped with all equipments and instruments.

主要生产设施有：生产车间有4间，面积共有6950平方米；冷库5间面积共有3000平方米，储存量约4000吨；10吨/次铝板冷结间3间，原料保鲜库2间约250吨，日产35吨冰的制冰车间10间，储冰库350平方米。主要加工设备有：1500kg/h双螺旋单冻机2套；600kg/k隧道式单冻机1套；虾生产线2条；熟虾生产线2条；鱼生产线2条以及日产10吨片冰机1台。工厂建设有独立的产品质量检验室，配套完善的检验仪器设备，并拥有一批多年从事出口水产品加工和贸易，具有丰富实践经验的技术人员，能够适应现代水产品加工发展的需要。

Determined electric conductivity of Rare Earths salt ErCl 3、DyCl 3、NdCl 3 and YCl 3 in H 2O at 293K, using formula calculated the molar conductivity of Rare Earths salt in H 2O , and discussed the effect of the electric conductivity and the molar conductivity of Rare Earths salt in H 2O with concentration at 293

天然Ⅰa型金刚石在垂直于( 10 0 )，( 110 )和( 111)三个方向上定向显微红外光谱的定量比较分析表明：水、片晶和C—C键在以上三个方向上所测得的浓度是不相同的。

By statistical analysis to a large number of data collected from the reliability test of 120km/h raising speed wagon,this paper,based on the theory of reliability engineering,elaborated the reliability of the tested wagon in the field of running safety,maintenance support,failure mode effect and criticality.

通过对120km/h提速货车可靠性试验中收集的大量故障数据进行统计分析，根据18万km的阶段试验数据分析与推断，利用可靠性工程的理论，对货车提速到120km/h运行的可靠性，做出初步的结论性判断，并提出了今后在铁路车辆设计、制造、试验及维护保障管理等各方面，全面引入产品可靠性质量管理理念，进行相应的可靠性深入研究。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。