查询词典 electric resistance

The strength and toughness of the nanocomposites are improved because of the addition of anao-Zno. The volume resistance strength and toughness of the nanocomposites are improved because of the addition of nano-ZnO. The volume resistance coefficient is decreased 8×10 times, surface resistance coefficient is decreased 5.7×10^4 times, and the friction coefficient is decreased 29% by adding nano-ZnO. The friction, wear properties, and the antistatic property of MC Nylon 6/ZnO nanocomposite are better obviously than MC Nylon 6. The macro stress of MC Nylon 6 structure is changed by the tensile test so that the preferred orientation of crystal surface (002+202) is more obvious.

纳米ZnO的加入起到同时增强增韧的作用；使体积电阻系数降了8×10^4倍、表面电阻系数降了5.7×10^4倍、摩擦系数降低了29%，MC尼龙6/纳米ZnO复合材料摩擦磨损性能和抗静电性能明显优于MC尼龙6；经过力学拉伸试验的破坏，引起MC尼龙6结构发生宏观应力变化，造成（002+202晶面）产生明显的择优取向。

Results The percentage of produced metallo-β-lactamase, lossed outer membrane OprinD2 and active efflux system in P A resistance to carbapenem are 29.8%, 31.9% and 31.9%, produced other β-lactamase is 6.4%, Conclusion Metallo-β-lactamase production is one of the main mechanisms in PA resistance to carbapinem, the result of correct detection in laboratory can not only promote the rational application of antimicrobial agents but also prevent the spread of bacterial resistance

结果 产金属酶、D2缺失、外排泵出分别占29.8%、31.9%、31.9%，产其他β-内酰胺酶占6.4%。结论产金属酶是PA耐碳青酶烯类抗菌药物最主要机制之一，准确的实验室检测不仅可以帮助临床合理选用抗菌药物并可减少细菌耐药性的传播。

Study on the activity of PAL、POD and SOD in the corn after inoculated pathogen showed that there were big differences between resistance and susceptible materials. The changs were more stabilization in resistance materials than in susceptible materials. There is a wave crest of activities in resistance materials, but no activity wave crest in the susceptible.

通过对抗、感品种接种病原菌后，其苯丙氨酸解氨酶、过氧化物酶和超氧化物歧化酶活性变化的研究表明，抗、感材料之间的变化大不相同，抗病材料中的各种酶活性变化都比较稳定，并且有活性波峰；而感病材料中各种酶活性变化都比较大，并且没有活性波峰。

The pH values of the leaf tissue juices of 9 potato varieties with two types of resistance to potato late blight were detected,5 of them with horizontal resistance and 4 with vertical resistance .

对马铃薯的5个水平抗性品系和4个垂直抗性品种的下部健康叶组织汁液进行pH值测定，并调查各品种晚疫病发病病级，分析组织汁液pH值与品种抗晚疫病相关性。

When the temperature is increasing quickly,the steel work will be destroyed easily without the protection of fire-proofing,therefore, the designing aim of steel frame fire-resistance is:how to quantitatively confirm the protectional measure in fire resistance in order to let the time of the fire resistance in steel work be longer or at least equal wit.

因此 ，在钢结构抗火设计时必须考虑到：如何定量地确定防火保护措施，使得钢结构构件的耐火时间大于或等于规定的耐火极

The common pressure resistance reflectoscope reflector the price expensive is not often easy to carry, therefore we designed the simple portable pressure resistance reflectoscope reflector to test semiconductor device's pressure resistance value, the specific discussion of the core oscillation circuit design process, Integration of the 555 timer gave a detailed analysis.

常见的耐压测试仪往往价格昂贵不易携带，因此我们设计了简单便携式耐压测试仪来测试半导体器件的耐压值，介绍了耐压测试仪的电路组成及原理，具体讨论了其核心部分振荡电路的设计过程，对集成定时器555做了详细的分析。

The common pressure resistance reflectoscope reflector the priceexpensive is not often easy to carry, therefore we designed the simpleportable pressure resistance reflectoscope reflector to test thesemiconductor device the pressure resistance value the specific discussion of the core oscillation circuit design process, Integration of the 555 timer gave a detailed analysis.

常见的耐压测试仪往往价格昂贵不易携带，因此我们设计了简单便携式耐压测试仪来测试半导体器件的耐压值，介绍了耐压测试仪的电路组成及原理，具体讨论了其核心部分振荡电路的设计过程，对集成定时器555做了详细的分析。

The results show that the microstructures of these three kinds of coating are different from those of the matrix (20 steel). The wear resistance of the flame spray coating is 4. 9 times that of the matrix. This is caused by the existance of hard noncrystal microparticals. The wear resistance of the coating by flame spray welding is 6. 3 times that of the matrix. The reason is that the fine crystal grains can be formed and the solution strengthening, dispersion hardening can be induced by these alloy elements. The resistance of the laser remelt coating is 8. 8 times that of the matrix. This is due to the solution strengthening, dispersion hardening and the existence of very hard dendritic crystal, eutectic and martensite in the microstructure.

作者指出，喷涂层由于层内有一定数量高硬度的合金非晶质点存在，其耐磨性是钢基体的4.9倍；喷熔层内合金晶化产生的晶粒细小，合金元素能起固溶强化作用，也能生成化合物产生弥散硬化作用，故此耐磨性是钢基体的6.3倍；激光涂敷层除所含合金元素产生的固溶强化和弥散硬化作用外，表层组织为高硬度的枝晶+共晶和马氏体，故其耐磨性是钢基体的8.8倍。

For the COG joint subjected to thermal storage test at 80 oC for 1000hours, the resistance raises from 0.48 to 1.26Ω while in the sample, the resistance raises from 0.73 to 1.52Ω; all test results fit the reliability requirements. But the reason of increment is not only NCF material degradation cause, but also the bump is elastically. Therefore elastic bump resile caused the resistance to increase after pressing. Consequently I used another two samples which is not thermal aging compared to test samples, the results were show bump resistances increasing about 65%, its come form elastic bumps itself.

COG试片经过80oC约1000小时之后观察电阻上升情形，一片约从0.48Ω上升至1.26Ω另一片从0.73Ω到1.52Ω也符合可靠范围内，但是上升的原因不完全是胶材劣化导致，因为凸块本身具有弹性，所以在压合之后还会回弹造成电阻上升，因此会使用另两片未热时效的试片来比较，得知结果大概65％的电阻上升是来自本身具弹性导致。

The forth part presents the experiments on fire area resistance and retroversion of fire smoke by using integrative fire simulation system of mine laneway network, with the results compared with the simulative numerical value, and the part also brings forward a new conception named fire area resistance which reflects character of fire resistance of mine laneway network. A general dimensionless calculation formula is deduced which presents the rule of smoke retroversion distance when fire occurs.

第四部分运用井巷网络火灾综合模拟实验系统进行了火区阻力和巷道火灾烟流滚退的实验研究，并与数值模拟结果进行了对比，提出了反映井巷网络火灾阻力特性的火区阻力新概念，推导出巷道火灾时期表征烟流滚退距离变化规律的通用无因次计算公式。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。