有效性

By comparing the equivalent mobility method with the direct solution method and the reverse direct solution method, reverse direct solution method is adapted in solution process because it is more excellent than the others in complicated numeric calculation, and the universality, validity and extensionality of systemic solution are realized.

在分析比较等效导纳法、正向直接法和反向直接法的基础上，发现对需要进行大量数值计算的系统，反向直接解法最为优越，提出将反向直接法作为系统求解的基本方法，实现了系统求解的通用性、有效性和易扩充性。

A novel scheme that improves SOA dynamic performance via increasing properly the facet reflectivity of device is proposed, and is validated in theory by the high-speed dynamic model. Simulation results show evidently that this scheme is superior to other schemes in the efficiency of dynamic characteristic improvement, steady-state gain, output ratio and external condition requirements.

提出了通过适当增加SOA端面反射率来改善SOA动态特性的新方案，并利用SOA高速动态响应模型进行了理论验证，模拟结果证实了该方案改善SOA动态特性的有效性以及在稳态增益、输出信号消光比和对外部泵浦条件的苛刻程度方面相对其他方案的优势。

The effect of grid ceiling can be reduced and the fire extinguishment efficiency can be improved by increasing the water pressure.

增大水压时，格栅时水量的分布的影响会减弱，当压力足够大时，能够接近无格栅时的灭火效率，可以保证自动喷水灭火系统在安装格栅吊顶后的灭火有效性。

By means of the experiments and calculation,it is proved that the analysis of O2 volume percentage is the brief and valid evaluation method of fire extinguishment capability of water mist containing additives.

通过实验和计算证明O2浓度分析是评价含添加剂细水雾灭火有效性的简单而有效方法。

To explore the role of radioheating hemostasia after tonsil extirpate.

摘要目的：探讨扁桃体摘除术后射频止血方法的有效性。

These results indicated that CaCl2 extractable fraction may not pay important role on metal phytoavailahility in the studied soils.

这些结果表明CaCl2提取态Zn、Cd对土壤中该元素的植物有效态可能不具重要贡献，而DTPA提取态金属和金属总量在一定程度上能作为评价土壤中元素植物有效性的标准。

In this paper, a new method of similarity measure based on segmented extreme value dynamic time warping distance is put forward.

文中最后运用MATLAB作对比实验，并给出实验结果数据，验证了该度量方法的有效性与准确性。

By simulating and testing the extremum sequence analysis method, results show the validation of the method.

通过对该方法开发的Matlab工具箱的仿真测试，结果表明了该方法的有效性。

The simulation results have proved the validity of the algorithm by comparative study for extruder pressure system.

通过挤出机的压力系统做仿真试验，结果验证了该算法的有效性。

Root exudates reduce the availability and toxicity of metal pollutants and play an important role in ability for plants to absorb heavy metals.

根系分泌物改变重金属的生物有效性和毒性，并在植物吸收重金属的过程中发挥重要作用。

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。