小高

Tantalum is an ideal material for hot cathode. It has a low electronic work function, high melting-point, low evaporativity, and good mechanical, high-temperature, chemical properties. Especially in a PCVD ambient for diamond film deposition, its surface is transformed into tantalum carbide which has a much higher melting-point, lower evaporativity and better properties of electron emission.

钽是一种理想的热阴极材料，它具有电子逸出功低、熔点高、蒸发率小、良好的机械性能、高温性能、化学稳定性等优异特点，尤其是在辉光放电PCVD制备金刚石膜的特殊气氛中形成的碳化钽表面层，具有比钽更高的熔点、更低的蒸发率和更好的热电子发射特性。

The results were as follows: Being infected virus, the electrolyte exosmosis rate of tobacco leaf was increased , while the increase rate of the leaf being injected ion was less than that of the control. The activities of SOD?

结果表明：病毒侵染后烟草叶片电解质外渗率增大，但离子注入后烟草的电解质外渗率增幅小于对照；病毒侵染后烟草叶片的超氧化物歧化酶、过氧化物酶、硝酸还原酶的活性及叶绿素含量均有所下降，但离子注入后烟草的上述酶活降幅较小；CAT活性在接毒后呈先低后高的变化，而对照在接毒后 10天该酶活性高出离子注入烟草 2倍多，随后剧降，到接毒 2 5天时仅为离子注入处理烟株 1/ 2。

According to the results of thermodynamic calculations and the flyash-sodium carbonate sintering experiments, contrasting the energy consumption, material resource consumption and the expellant of the greenhouse gas CO2 during the two sintering processes, it demonstrates that the procedure could be the least consumptions of the mineral resources and energy, the least expellant of the greenhouse gas CO2, and that the terminal products with high value could be manufactured when sodium carbonate is taken as the flux agent.

基于热力学计算结果，对比了两种工艺的能耗、物耗、温室气体排放量等因素，结合粉煤灰－碳酸钠烧结反应实验，证明以碳酸钠为配料，高铝粉煤灰烧结过程具有一次性资源消耗量少，能耗最低，温室气体CO2排放量最小，且可生产高附加值产品，实现完全清洁生产等优点。

Numerical control tools are developing quickly and used widely because they are more roboticized, less error of machined parts, products' quality are steady, easy to product exploder and easy to realize computer aid manufacture.

由于数控机床具有自动化程度高、加工的零件误差小、产品质量稳定、生产效率高、便于产品的研制开发以及便于实现计算机辅助制造等特点而获得了迅速的发展和广泛的应用。

They are:1 design and implementation of nonlinear least Square Algorithm,2 design of general formula expositor,3 design and implementation of software encryption scheme and4 making of help files system.

数值实验表明：设计的算法具有极高的计算精度，也有较好的全局收敛性与稳定性，明显优于SPSS等软件，不仅可以处理小残量问题，而且能够处理大残量或非线性程度较高的问题，对于线性回归，可以一步达到精确的结果，使线性问题和非线性问题很好地统一起来。

The high output power that it has and admirable n precision make the user need not install the exterior amplifier that checks high power facilities, can reduce the uncertainty of the test to the smallest, thereby the error that as soon as possible discovers design process is medium.

它所具有的高输出功率和优良的电平精度使用户无需安装测试高功率设备的外部放大器，并能将测试的不确定性减至最小，从而及早发现设计过程中的错误。

In order to improve the engine's power, emission and the economy of the fuel, we developed a system to investigate the electronic control fuel injection of motorcycle engine. Inspect each parameter real-timely and modify some parameters factitiously to get the best power performance, emission performance and economical performance.

0引言采用电子控制燃油喷射技术是减少机动车排放污染的最有效的方案，它具有反应快、实时性好、控制精度高与控制算法灵活等特点，可以根据发动机运行的不同工况，实现空燃比最佳控制，从而取得良好的排气净化和节油效果；而且相对于原来化油器式的燃油喷射方式来说，电子控制的进气压力损失小，燃油效率高，满足发动机动力性、经济性和排放性要求[1]。

Tempered at 420℃, high hardness and toughness property can be maintained. It meets the requirement of multi-times impact strength with small energy and fatigue on operating duty. It has the higher endurance life property and so on..

经420℃回火，保持较高的强度和韧性，满足汽车板簧小能量多冲和疲劳载荷的服役状态，具有较高的疲劳寿命等使用性能。

The fig wasp community in the syconia of Ficus altissima is most diverse among all the known fig wasp communities in China.

高榕隐头果内的小蜂群落是我国目前所知榕小蜂群落中最为丰富多样的群落。

Widely distributed in Central America of fresh water and salt waters, the United States for the main freshwater aquaculture species. 1999 U.S. freshwater aquaculture production accounted for about 81 percent of the large warm-water species of fish, fork spots to fish tail as the Ministry of Agriculture to promote the country's fresh water breeding improved varieties have a very obvious advantages: First of Table no scales no small thorn, processing convenience and the other is the quality and refine, nutrient-rich, easy to digest and absorb the third is of miscellaneous eating habits, fast-growing, high yield, strong adaptability and easy to keep the fourth character is tame, like cluster activities , High density of aquaculture, particularly the pond custody and cage culture Fifth Tansi, easy fishing, Youdiao suitable for the development of leisure industry.

广泛分布于美洲中部的淡水和咸水水域，为美国的主要淡水养殖的品种。1999年约占美国淡水养殖总产量的81%，该鱼种是大型温水性淡水鱼类，斑点叉尾回鱼作为农业部向全国推广的淡水养殖的优良品种具有很明显的优点：一是体表无鳞没有小刺，加工方便；二是内质细嫩，营养丰富，容易消化吸收；三是食性杂，生长快，产量高，适应性强，易于饲养；四是性格温顺，喜好集群活动，可以高密度的养殖，特别是池塘主养和网箱养殖；五是贪食，易垂钓，适合发展休闲游钓业。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。