性能

Using polyurethane as matrix and carbon black as conductive medium, electric conductive master batch was prepared with the blend method, and the carbon black /polyurethane blend conductive fiber was prepared with melt spinning method.

研究表明：随着碳黑含量的增加，导电性增强，但纤维的力学性能、可纺性下降，当碳黑质量分数为16％时，其导电性和力学性能较好；分散剂的含量对纤维导电性也有一定的影响

Company's new heat—resisting rubber board is mainly used in a solar energy silicon battery seal equipment —— Laminating machine, stable characteristics in craft, thermo stable, bears the aging, long life, the physical performance satisfies GB/T5574—2003 standards.

2002年我公司为适应市场需求开发了新型耐热橡胶板，主要用于太阳能硅电池封装设备—层压机，工艺性能稳定，耐高温、耐老化、寿命长，物理性能满足GB/T5574—2003标准。

The results indicate that potassium borate possesses very excellent extreme pressure and good antiwear capacities in water.

结果表明，四硼酸钾对提高水的极压性能效果十分突出，对改善抗磨性能效果一般。

The salt-bath with the borax content of 25,35,45 and 55 wt.

并进行了在混合盐浴中分别添加25％、35％、45％、55％的硼砂的盐浴性能对比试验，主要考察了盐浴的覆层能力和表面粘盐的清理性能。

The effect of treating condition (form of boron used, the concentration, temperature of the solution of boride, the heat-treatment temperature) on the mechanical properties of the resulting carbon fibers was investigated.

研究了处理液组份、浓度、温度和石墨化热处理温度对最终碳纤维力学性能的影响。通过力学性能的变化评价了硼改性的效果。

In this paper it analyzes the execution process of SQL statement in Oracle database and finds out that reducing times of SQL statement parsing and optimizing CBO are the emphases of SQL performance tuning.Then it validates the key role of using bound variable and cache cursor in enhancing performance of SQL with example.

从分析ORACLE数据库中SQL语句执行原理入手，指出减少SQL语句的解析次数和优化CBO是SQL性能优化的重点，并用实例验证了使用绑定变量和高速缓存游标在提高SQL性能方面的重要作用。

The graphite-reinforced BPI composite laminateswere made by autoclave techniques with the optimal cure processes and its properties were tested.

研究了碳纤维/BPI结构复合材料的耐热性、力学性能以及热物理性能。

The anisotropic Bragg diffraction properties of volume gratings in photorefractive crystals were investigated by the method of the couple wave theory.

利用耦合波理论分析了光折变晶体中体光栅的各向异性衍射性能，研究了在不同初始记录光强比的条件下，记录光入射角的改变对光折变体光栅各向异性布喇格衍射性能的影响。

In this paper,braided technic and mechanical property of FRP antennal interface were studied.

对玻璃钢天线接口的编织制备工艺进行了研究，通过压缩和弯曲性能测试研究了其力学性能，分析了编织制备工艺的优越性并讨论了其中存在的问题。

Using Latin square test, the effect of geometrical parameters on the characteristics of non-overload sewage pump was studied, and the effecting principle of geometrical parameters on efficiency, maximum brake horsepower and its location were researched, the major and minor factors affecting these performance were found out by way of variance analysis, the correction of equation on maximum brake horsepower and its location were also tested.

用正交试验法研究了各几何参数对无过载排污泵性能的影响，探索了各几何参数对效率、最大轴功率值及其位置的影响规律，并通过方差分析找到了影响这些性能的主要因素和次要因素，验证了无过载排污泵最大轴功率值及其位置公式的正确性，根据试验结果对模型泵提出了进一步设计方案，本试验结果对无过载排污泵水力设计有一定的参考价值。

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。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷