2) sequential extraction procedures
序列提取
1.
In this study, for atmospheric aerosol samples collected on quartz filters, sequential extraction procedures were used to divide the total lead content into three fractions, i.
用石英纤维滤膜采集大气颗粒物样品,采用序列提取的方法把铅的总量分成环境可迁移态、碳酸盐和氧化物态、有机质和残渣态3个分量,用石墨炉原子吸收分光光度法测定铅的浓度,仪器检出限为1μg/L。
3) extraction sequence
提取序列
1.
The extraction sequence experiment results showed that the influence of extraction sequence on sulfide formation and organic formation is obvious;and the leaching rate respectively reaches maximum value in different extraction sequence.
提取序列对形态分析结果之影响的试验表明,硫化态和有机态受提取序列变化很明显,分别在不同序列中达到最大值。
2.
This paper applied the BCR Three-Step Continuous Extraction for speciation analysis of calcium and magnesium in soil as well as their extraction sequence in an area with high incidence of esophagus cancer in Hebei Province.
本文采用改进的BCR三步连续提取法对河北某食道癌高发地土壤中钙、镁进行了形态分析及提取序列的研究。
4) spread spectrum sequence
扩频序列
1.
Design of Secure Communication System Based on Hyperchaotic Spread spectrum Sequence;
扩频序列超混沌保密通信系统设计研究
2.
Simulation for spread spectrum sequences of CDMA system;
CDMA系统中扩频序列码性能仿真
3.
This paper is based on spread frequency communication and mainly introduces two kinds of characteristics and methods of common spread spectrum sequences(the m sequence and the Gold sequence).
以扩频通信为出发点,介绍了常用的两种扩频序列 m 序列和 Gold 序列的性质及其产生的方法,并用Matlab 程序仿真实现,通过计算机对它们的误差性能进行分析,得出 Gold 序列更适合做现代通信 CDMA 系统的扩频地址码。
5) spreading sequences
扩频序列
1.
Research on spreading sequences with a novel chaos;
一类新的混沌扩频序列研究
2.
Correlation characteristics of binary phase and quadri phase ICMIC spreading sequences;
二相与四相无限折叠混沌扩频序列的相关特性分析
3.
Based on the generalized Chirp-like sequences, a new class of spreading sequences was constructed with the help of the product technique and its correlation properties were discussed.
基于广义Chirp like序列族,用序列乘积的方法,构造了一类新型扩频序列族,并讨论了它的相关特性。
6) Spreading sequence
扩频序列
1.
On generalized orthogonal spreading sequences for quasi synchronous CDMA system;
关于准同步CDMA系统的广义正交扩频序列(英文)
2.
Research on spreading sequence in CDMA communication system
CDMA通信系统中扩频序列的仿真研究
3.
System synchronization is the key technology in MC-CDMA,and a synchronization algorithm based on user spreading sequence is presented in this paper.
系统同步是MC-CDMA中的关键技术,本文提出一种基于用户扩频序列的同步算法,该算法充分利用用户扩频序列的特性在频域采用分段相关求和实现整数倍频偏估计,然后将经频偏补偿后的接收序列和本地参考序列进行时域相关运算实现精确定时同步。
补充资料：煤炭提取残余物-轻组分烷烃油-酸性提取物与异丙烯的F-C的反应产物
CAS：98072-40-3
中文名称：煤炭提取残余物-轻组分烷烃油-酸性提取物与异丙烯的F-C的反应产物
英文名称：Extract residues (coal), light oil alk., acid ext., Friedel-Crafts reaction products with isobutylene
Extract residues(coal),light oil alk.,acid ext.,Friedel-Crafts reaction products with isobutylene
中文名称：煤炭提取残余物-轻组分烷烃油-酸性提取物与异丙烯的F-C的反应产物
英文名称：Extract residues (coal), light oil alk., acid ext., Friedel-Crafts reaction products with isobutylene
Extract residues(coal),light oil alk.,acid ext.,Friedel-Crafts reaction products with isobutylene
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条