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Methods:The potassium iontophoresis induced tailflick was used to measure the pain threshold.

目的 观察大鼠尾核内一氧化氮对动物痛阈的影响。

There must have been a time billions of years ago when life crossed the threshold of irreversibility.

数十亿年前，生命肯定有过一次跨越不可逆性门槛的行动。

For example, I have a low threshold for irritation.

例如，我的"生气"尺度很低，很容易就生气。

For illusory border induction in the abutting grating illusion it is 5. 3%.(3) Random-dot stereograms are found to induce depth equally well in both display modes. The disparity threshold for perceiving depth in isochromatic random-dot stereograms levels off at a luminance contrast of 30%.

在亮度对比与等亮度颜色对比的条件下，受试者的立体视敏度不存在有统计学意义的差异；并且，当双眼接受不同颜色对比的等亮度立体图对刺激时，与亮度对比条件相比，受试者的立体视敏度也无明显差异。

This algorithm utilizes histogram threshold to merge some regions to remove the influence taken place by small region or isolated point.

该算法利用直方图阈值进行区域合并，消除了小块区域和孤立点对最后分割结果的影响，有效地克服了原有算法的一些缺陷和不足。

This algorithm uses the gird and density threshold method to remove isolated points of data set,selects the initial seed points in propagating tree randomly,judges vegetal direction and executes sort according to the density-based distance,calculates cluster aim function by the propagating tree value.

算法利用网格和密度阈值去除数据集中的孤立点，从网格集中随机地选取种子点，以基于密度距离作为判断生长方向及分类的依据，以网格生长树的大小作为聚类目标函数。

The simulation results show that this scheme can realize the global optimization of the MEA algorithm and can avoid the selection and adjustment of parameters such as iteration step lengths, threshold values, etc.

仿真结果表明，该算法不仅实现了MEA算法的全局最优求解，还可避免步长、间值等参数的选择与调整。

The use of genetic algorithms and iterative threshold method of image segmentation.

详细说明：使用遗传算法和迭代阈值的方法实现图像分割。

In other words, the threshold is set not only based on a relative level of jammer and noise but also the number of the jammed frequencies.

具体来讲，Clipper门限的优化是在最小信干比，同时受干扰的频率个数一定时系统误码率最小的条件下进行的。

Johnstone, a new threshold function with dual variables is structured.

M。 Johnstone 提出的多分辨分析小波阈值去噪方法的基础上，构造了一个双变量阈值函数。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼