Accurate index information and statistics are fundamental to cost-based decisions in the query optimizer.
准确的索引信息和统计信息是查询优化器中基于成本的决策的基础。
The fundamental principle and calculation of potential hazardous index method were introduced.
介绍了潜在危害性指数法的基本原理和计算公式。
In this paper, we study the condition which makes the fundamental group of graph have every positive integer as the index of some normal subgroup.
本文主要研究图的基本群的正规子群的指数何时成为任意正整数的条件。
The uncertainty in measurement is the most fundamental and important characteristic property index in the system of measurement, and it's also an important mass measurement sign.
测量不确定度是测量系统最基本也是最重要的特性指标，是测量质量的重要标志。
In order to calculate the equivalent step index of the periodic structure of the cladding holey optical fiber, all-vectorial fundamental space filling mode approach was utilized.
为了计算周期结构包层多孔光纤的等效阶跃折射率，采用了全矢量基本空间充填模式法。
According to the data analysis, the balancing index of our fundamental education is tending to balance as a whole.
数据分析表明，我国基础教育从整体上看正在趋向均衡。
Therefore, the setting of a scientific, comprehensive, specific, and measurable evaluation index is the fundamental work of Journalists Performance Appraisal Management.
因此，一套科学、全面、具体、可衡量的绩效考核指标的设定，是构建一个完整的采编绩效管理系统的基础性工作。
Establishment of environmental economic index system in a district and environmental economic index system in an enterprise has become an important fundamental work.
建立区域环境经济指标体系和企业环境经济指标体系就成为了一项重要的基础工作。
It also briefly describes the fundamental process and related API of using Lucene to implement the index and search function.
简单说明了采用Lucene进行索引和搜索的基本过程和相关的API。
The evaluation of customer satisfaction index is the fundamental of customer satisfaction realized by enterprises.
顾客满意度评价是企业实现顾客满意的基础。
After the simulation, the relationship of fundamental mode loss with the core index, wavelength and the diameter of cladding air holes is given.
通过模拟，给出基模损耗同芯折射率、光波长和包层空气孔直径之间的一般规律。
The index of the core is a little smaller than that of the cladding base material, so the fundamental mode loss of short wavelength increases rapidly and leads to the mode cutoff.
这种光纤的纤芯折射率比包层基质折射率小，所以短波长时基模损耗迅速增大，使得光传输截止。
Lastly, the fundamental mode loss of a special kind of depressed-index core PCF is analyzed.
最后，本文又对一种低折射率芯光子晶体光纤基模束缚损耗特性进行了分析。
Then in analogy with the theory of step-index fibers, the effective index of the fundamental mode and the dispersion of PCF can be calculated simply.
然后通过用类似于阶跃折射率型光纤的理论，很容易计算出光子晶体光纤的基模模式折射率和色散。
Then in analogy with the theory of step-index fibers, the effective index of the fundamental mode and the dispersion of PCF can be calculated simply.
然后通过用类似于阶跃折射率型光纤的理论，很容易计算出光子晶体光纤的基模模式折射率和色散。
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