threshold of sensitivity

The laser feedback interference in λ/ 4 phase-shifted index-coupled and gain-coupled Distribute Feedback laser diodes is analyzed. The threshold gain and oscillation frequency variation in DFB laser diode are theoretically deduced, and present the expression of complex feedback sensitivity.

分析了λ/4相移折射率耦合型及增益耦合型分布反馈激光器的自混合干涉效应，推导出分布反馈激光器的增益及频率的变化，并给出复反馈灵敏度系数表达式。

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Abnormally lower threshold of sensitivity to heat and cold.

对冷、热温度的感觉阈值异常的低。

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Finally, based on H-H model of neuron, we simulated the SR to help neuron increasing tactile sensitivity when the stimulating signal is under the threshold via an algorithm to solve nonlinear the H-H equation.

论文最后以神经元H-H方程为基础，采用一种求解H-H非线性方程的算法，初步探索利用随机共振提高触觉神经元阈下触觉信号敏感能力的仿真研究。

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PCR can amplify DNA from a single cell and while this is not necessary for diagnosis, a certain threshold of sensitivity will be required.

PCR可以把来自一个细胞的DNA进行扩增，尽管这对于诊断是不必要的，某种灵敏度阈值还是需要的。

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Influence with the Detection Sensitivity and Detection Threshold of LiF Thermoluminescent Detector ( TLD) under Different Velocities when the Temperature Rises

升温速率对氟化锂热释光探测器灵敏度和探测阈的影响

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If the error is higher than the threshold of visual sensitivity, indicates its ability to be aware of the human eye, or can be ignored.

如果误差高于视觉的敏感门限，则表明其能够被人眼觉察，否则可以被忽略。

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For level VII ( nodes located in tracheoesophageal groove), minimal diameter ≥ 5 mm was used as diagnostic threshold of CT, the sensitivity was 69.23%, specificity was 100%.

以淋巴结最小径≥5mm为气管食管沟区转移淋巴结的CT诊断阈，敏感性69.23%，特异性100%。

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Methods 203 persons were selected to test salt sensitivity and taste recognition threshold to salt by chronic salt loading. We collected 24 hours urine of the base-line and measured urinary sodium.

方法选取203人进行慢性盐负荷试验，确定盐敏感性，并测定其盐阈、收集基线24h尿液，测定尿钠排泄量。

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Correlation study of IOP and corneal sensitivity threshold in patients with glucoma

青光眼患者眼压与角膜感觉阈值的相关研究

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Sensitivity analysis of tasters' olfaction and taste threshold

不同品酒员对几种味觉、嗅觉物质的敏感性分析

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