The centrifugal extraction procedure with large phase ratio was applied to sample micropreparation prior to instrumental analysis.
建立了一种快速、准确,溶剂消耗少的测定可乐饮料中咖啡因含量的紫外光谱分析方法,并将大相比离心萃取应用于仪器分析样品微制备过程。
Based on analyzing the conventional single intersection signal control method,the weakness of the conventional method was pointed out,and the conception of "large phase" was introduced to solve the problem of incomplete advisement and great operand on conventional control method.
针对传统的单交叉口交通信号控制方法考察不全面和运算量大等缺陷,引出了“大相位”的概念。
The results showed that the average DBH and individual volume of E.
对4年生的巨尾桉马大相思混交林生长量、林内小气候和土壤理化性质进行了研究分析,结果表明:混交林中巨尾桉平均胸径和平均单株材积与巨尾桉纯林相比分别大6。
This article proposes an OFDM synchronization algorithm based on cyclic prefix, which uses maximum-correlation criterion and normalizes the energy of received signals.
为此提出一种基于循环前缀的OFDM同步算法,利用了最大相关原则,并进行了能量归一化,对最大似然同步算法进行了简化,适用于信噪比未知的情况。
Population Dynamics of the Giant Panda in the Daxiangling Mountains According to PVA;
从种群生存力分析看大相岭大熊猫未来
Ecogeographical Distribution of Butterflies in the Daxiangling Mountains of Sichuan Province;
四川省大相岭蝶类的生态地理分布
A method of designing a large phase shift circuit in millimeter wave is presented.
介绍了谢夫曼开关线型移相器在Ka频段实现90°和180°大相移量的原理和关键技术,使用ADS仿真软件进行建模仿真。
And it is confirmed that Neidaxiang did exist in the beginning of Dongdan country.
采用文献与考古资料相结合的"二重证据法",论述了辽代契丹贵族耶律羽之家庭成员与东丹国及辽阳府的密切关系,并考证出东丹国建立之初中央仍置有内大相一职。