Rather the detection limit is shown to be sufficiently low by the analysis of samples with known concentrations of analyte above and below the required detection level.
而是，通过分析含有高于和低于必需的检测水平的、已知待分析物浓度的样榀，以显示检测限度足够低。
The testing content and procedure on detection range with a certain new model low light level observation device are described.
叙述国产某新型微光观察仪探测距离的测试内容和方法，并得出具有一定参考价值的结论。
The detection limitation of PKS using antibodies was 1000 fold higher than Commassie blue staining, ready for detection of the probably very low level of PKS expression in plant.
利用抗体检测pks的检出极限比考马斯亮蓝染色高1000倍，应可用于检测植物中低水平的PKS表达。
This method also has characteristic of low amplitude detection threshold, it can detect weak signals with amplitude value smaller than 10-3 level.
该方法还具有幅度检测门限值低的特点，可对幅度为10 - 3级以下的信号进行检测。
This thesis mainly focuses the research on the following three aspects: edge detection, straight line detection and video text detection, which are belong to the low-level visual feature detection.
本论文主要从边缘检测、直线检测和文本区域检测三个方面对低层视觉特征检测技术进行研究。
So, low level DC signal detection has great importance while full of challenges at the same time.
因此微弱直流信号的检测意义重大，同时也充满挑战。
Low light level TV is usually operated under extremely low illuminance or other adverse circumstances and the output SNR decreased to such a level that possibility of detection is greatly reduced.
微光电视工作于极低照度或恶劣环境下，输出信噪比明显降低，目标完全淹没在背景噪声中，使探测率大大下降。
By this technique, an obvious improvement can be achieved for the detection capability of low light level imaging device and infrared thermal imaging device.
使用该技术，可显著提高微光成象和红外热成象装置探测目标的能力。
They provide system security and immediate reliable low level ground fault detection on three-phase AC resistance grounded or grounded electrical distribution systems.
此类继电器能够增加系统安全性，并对三相交流接地电阻或接地配电系统进行可靠的低级接地故障检测。
A major cause of errors in speech recognition is the inaccurate detection of word bound-ary. Conventional methods can not work well in the condition of low SNR and variable background noise level.
词边界检测误差是语音识别中产生错误的主要原因之一，常规的检测算法在低信噪比尤其在背景噪声能量可变的环境下不能有效工作。
Suitable for low-light-level detection applications, the photomultiplier tube (PMT) provides extremely high sensitivity and ultra-fast response.
适合微光探测应用，光电倍增管（PMT）提供极高的灵敏度和超快速响应。
Searching for the effect biomarkers of long-term and low-level exposure to op has a very important meaning in detection of the earlier harmful effect of exposed populations in time.
探讨长期低剂量接触OP的效应标志物，对于及时发现职业接触人群早期健康损害，预防和控制慢性农药中毒具有十分重要的意义。
Because of the low resolution and few gray-level for B-ultrasonic images, we can hardly obtain satisfied result by the traditional edge detection methods.
由于B超图像的分辨率差、灰度级别少等特点，用传统的边缘检测方法难以得到满意的效果。
Because of the low resolution and few gray-level for B-ultrasonic images, we can hardly obtain satisfied result by the traditional edge detection methods.
由于B超图像的分辨率差、灰度级别少等特点，用传统的边缘检测方法难以得到满意的效果。
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