The index variation of channel waveguides based on a mode field distribution is studied.
借助条形光波导输出模式场研究条形光波导芯区的折射率变化。
The form of the refractive index variation in waveguide in separate confinement heterostructure (SCH) affects directly the…
分别限制异质结构，波导层折射率的变化形式不同，直接影响输出光的远场分布。
This competition leads to high angular sensitivity in response to the refractive index variation of the sample solution in the gap.
由于该竞争行为，当两单栅间隙内充盈的样品溶液折射率发生变化时，体现为反射谱上较高的角度灵敏度。
High order guided mode in double metal-cladding waveguide is more sensitive to the refractive index variation of the polymer guiding layer by comparing with low order guided mode.
双面金属包覆波导高阶导模对聚合物薄波导层的折射率变化比低阶导模更敏感。
The imaging characteristics of a GRIN fiber lens with exponential variation of the constant-index surfaces are discussed based on the ray paths equations.
本文根据光线轨迹方程，讨论一种等折射率面为指数型变化的梯度折射率纤维透镜的成象特性。
The aggregate index that appears the variation magnitude and variation speed and the variation nature is proposed to describe quantitatively the variation nature and complexity of heterogeneity.
提出了评价储层非均质性的综合评价指标，对储层非均质性的变化幅度、变化速度以及变化的随机性进行定量描述。
The changing law of retention index with temperature from chromatographic thermal function resulted from the variation of the different entropy and enthalpy during the chromatographic separation.
并从色谱热力学函数分析了保留指数随温度变化规律的主要原因是由于在色谱分离过程中不同的熵变和焓变所造成的。
Objective: To investigate the variation of doppler Perfusion Index (DPI) in patients with liver metastases of colorectal carcinoma by color doppler sonography.
目的：检测大肠癌患者的肝脏血流灌注指数(DPI)，探索大肠癌肝转移患者DPI变化的规律。
Discusses the trend index and its application for analyzing the trend of liquor variation.
论述了趋向指数及其在分析液量变化趋势方面的应用。
The result shows that runoff drought index and spring wheat climate output of Hexi irrigational area appears opposite variation tendency.
研究结果表明，径流量干旱指数与河西灌溉区春小麦气候产量呈反位相的变化趋势。
So, The variation of serum Hyp content can be considered as an important and early index for diagnosing chick fluorosis.
可以将血清羟脯氨酸含量的变化作为鸡慢性氟中毒早期诊断的主要参考指标。
The ground base was evaluated and analysed by using biological index and variation of population of benthon which are effected by bottom water and mud environment.
以底栖动物作为底层水环境和底泥环境长期影响的指标，利用生物指数和种群结构的变化对底质进行评价和分析。
The result shows that runoff drought index and spring wheat climate output of Hexi irrigational area present opposite variation tendency of phase.
研究结果表明，径流量干旱指数与河西灌溉区春小麦气候产量呈反位相的变化趋势。
The estimation of tail index for regular variation heavy-tailed distributions aroused our concern, many scholars proposed several methods, but all of them have some disadvantages.
正规变化重尾分布的尾部指数的估计方法有很多种，但都不同程度地存在一定的局限性。
The effect of the shearing strength indexes variation and the density variation of tailings on reliability index is analyzed.
探讨了材料的抗剪强度指标和密度的变异性对坝体可靠指标的影响规律。
So, the change tendency of runoff drought index can be used to predict the variation tendency of output of spring wheat in the future of this area.
因此，可利用径流量干旱指数的变化来预测该地区未来春小麦产量变化趋势。
Conclusion: Respiratory variation of SVC systolic forward flow was a sensitive index for evaluating presence and severity of PH in patients with COPD.
结论：SVC收缩期正向血流的呼吸变化性是检测COPD患者肺动脉高压的敏感指标。
Objective To explore the correlation of chromosome aberration and the hemogram variation in X-ray workers and provide the mechanism index for radiation damage.
目的探讨X射线工作人员染色体畸变与血象变化的关系，为辐射损伤机制提供线索。
Soil water variation structure in normal farmland and in reclaimed land by filling gangue and flyash was studied by taking the soil water capacity and variability as a synthetical index.
以土壤含水量作为反映土壤特性的综合性指标，研究了充填煤矸石复垦地、充填粉煤灰复垦地和未塌陷区对照地的含水量变异的结构性。
On review of the theories of wave-mean flow interaction and non acceleration, theorem, and the corresponding numerical analyses, the dynamical mechanism of variation of westerly index is discussed.
通过波流相互作用和无加速定理的讨论以及相应的数值分析，本文介绍有关纬向平均西风变化的近期研究成果。
Besides, the variation of evaporation from soil as related to leaf area index has also been calculated and analyzed.
并分析了返青后土壤蒸发随叶面积指数变化的规律。
Land price index is an important parameter showing the variation and its tendency and the degree of land prices of different kinds of land as well as the overall price level in a city or a town.
城镇地价指数是反映城镇区域内各类土地价格及其总体价格水平变化趋势及程度的一种重要参数。
Based on the random variation of cavity length, characteristics of the medium index and mode competition effect, low-frequency beat and noise continuums are explained.
根据腔长的随机变化、介质色散特性和模竞争效应解释了低频拍和连续噪声谱。
Based on MODIS NDVI, this paper studied the variation trend of vegetation index in the years of 2000 to 2004 in Ningxia area using quantitative remote sensing technique and slope method.
采用定量遥感技术及斜率法，以全球植被指数MODISNDVI数据作为数据源，对宁夏地区2000—2004年期间的植被指数变化幅度及变化趋势进行了研究。
The Leaf Area Index (LAI), a key parameter with seasonal variation in vegetation dynamics, is simulated by ICM and compared with the MODIS data.
重点对反映植被动力学的关键参数——叶面积指数(LAI)的模拟结果与观测进行了对比分析，评估了ICM对LAI季节变化特征的模拟能力。
In this paper the change of characteristics of underground space due to its enlargement was investigated. The index of safety variation was evaluated qualitatively.
本文就地下空间的大规模化引起的地下空间特性变化进行了探讨，对安全性变化指标进行了定性评价。
Considering the sensitivity of virtual nodal voltage to line reactance and variation of reactive power of power grid comprehensively, the voltage instability index is put forward.
综合考虑节点电压关于线路电抗和系统无功功率变化的灵敏度，提出了电压失稳指标。
Atmospheric turbulence occurs with the variation of refraction index of atmosphere caused by random variation of atmospheric temperature and pressure.
大气湍流是由于大气温度、压强的随机变化引起大气折射率随机改变而产生的。
The variation of symptoms and hepatic biochemical index was observed.
观察症状、体征及治疗前后监测肝功指标。
The variation of symptoms and hepatic biochemical index was observed.
观察症状、体征及治疗前后监测肝功指标。
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