absolute extract
英 [ˈæbsəluːt ˈekstrækt]
美 [ˈæbsəluːt ˈekstrækt]
网络 纯净萃
双语例句
- Use chloroform, petroleum ether and absolute alcohol as extract, and set out the extractive with UV spectrum.
方法：用氯仿、石油醚、无水乙醇三种常用溶剂做提取液，提取物用紫外光谱法测定。 - Kudzu Roots Starch which was dissolved by hot water, and settled by ethanol absolute, then Macro reticular resins was used to separate and purify puerarin from it, and extract Puerarin by Ultraviolet Spectrophotometry, or determine the content of puerarin by HPLC directly.
葛根淀粉经热水溶解糊化后，用无水乙醇沉降淀粉，然后经大孔树脂分离纯化葛根素后用紫外分光光度法测定葛根素含量，或者用HPLC法直接测定葛根素含量。 - In this method the opening operation of rectified signal's absolute value is performed to filtrate the spike noise, then the dilation operation of flat structuring element, whose length is one half of the period of power frequency, to extract the magnitude characteristic of the signal;
该方法先对整流信号（取绝对值以后的信号）进行开运算以滤除尖峰噪声，再用长度为1/2工频周期的扁平结构元素进行膨胀运算提取其幅值特性； - Sample of plant leaf was pulverized with absolute alcohol in a mortar to extract chlorophyll from the leaf.
将植物叶试样置于研钵中用无水乙醇研磨，使植物叶中叶绿素溶入乙醇中。 - The measurement principle of this measurement system is discussed. Secondly, a signal processing algorithm is designed for the absolute distance measurement system performed with frequency-sweeping interferometry. The algorithm uses the zero position of the signal to extract the period or frequency of the signal.
其次，设计了一种针对频率扫描绝对距离测量系统的信号处理算法，该算法利用信号的零点位置提取信号的周期或频率。 - This paper adopts the robust least absolute deviation fitting method to extract minutia features, and form feature coding.
本文采用鲁棒的最小一乘拟合法提取指纹特征，形成特征编码。 - It is firstly established a self-adaptive background prediction model of infrared small target based on the least absolute deviation criterion. Then, the chaos-particle swarm algorithm is used to extract the optimal prediction parameters, thus the infrared background is predicted more accurately.
首先建立基于一乘准则的红外小目标自适应背景预测模型，然后应用混沌粒子群算法提取最优预测参数。