four velocity是什么意思

网络释义

用法例句

Three series of quaternary rare earth complexes [Ln( x MBA) 2(NO 3)(Phen)] 2(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Er;MBA=CH 3C 6H 4COO -)were synthesized in ethanol/water solution system with slight acidity, the products were characterized by elemental analysis, IR,UV,DTA TG and 1H NMR, the ESR spectra of three Gd complexes and fluorescence spectra of three Eu complexes were determined.

在酸性介质 ,乙醇 /水混合溶剂中合成得到了三个系列的四元混配配合物 [Ln(x- MBA) 2(NO3) (Phen) ]2 (Ln=La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Er;MBA=CH3C6H4 COO-)。

Solution of Forecasting-Correcting-Improving Algorithm to Quaternion Differential Equation of SINS Attitude;

基于预测-校正-改进算法解算SINS姿态的四元数微分方程

Research on the Quaternion Feedback Linearization for Spacecraft Attitude Control;

基于四元数反馈线性化的飞行器姿态控制方法研究

Cubic nonlinear phase coupling analyse of two-dimensional harmonic based on quaternion;

基于四元数模型的二维三次非线性相位耦合频率估计方法

Study on metastable phase equilibrium of quaternary system Li~+,K~+//CO_3~(2-),B_4O_7~(2-)-H_2O273K;

四元体系Li~+,K~+//CO_3~(2-),B_4O_7~(2-)-H_2O273K介稳相平衡研究

The equilibrium solubilities and phase diagram of the quaternary system KVO3-NaVO3-CO(NH2)2-H2O at 298 K are studied by isothermal dissolution equilibrium method.

作者采用等温溶解平衡法研究了KVO3-NaVO3-CO(NH2)2-H2O四元体系298 K时的溶解度相关系,考察了钾、钠、脲素等共存离子或盐类同偏钒酸根离子的相互作用。

The solubility of saturated solutions of quaternary system RbCl-CeCl3-HCl-H2O at 25 ℃ was determined and the corresponding equilibrium diagram was constructed.

测定了四元体系RbCl-CeCl3-HCl-H2O在25℃时的溶度数据,绘制了相应的溶度图。

Europium and terbium rare earth complexes with tetracarboxylic acid were successfully prepared in aqueous solution.

在水溶液中合成了铕和铽的四元羧酸稀土配合物。

"Multi-factor controlling,four-factor entrapping and key-factor enrichment" of stratigraphic-lithologic reservoirs and exploration practice in Erlian Basin (Ⅰ)——"Multi-factor controlling" mechanism;

二连盆地地层岩性油藏“多元控砂—四元成藏—主元富集”与勘探实践(Ⅰ)——“多元控砂”机理

"Multi-factor controlling,four-factor entrapping and key-factor enrichment"of stratigraphic-lithologic reservoirs and exploration practice in Erlian Basin(Ⅱ)——"Four-factor entrapping"mechanism;

二连盆地地层岩性油藏“多元控砂—四元成藏—主元富集”与勘探实践(Ⅱ)——“四元成藏”机理

Preparation of VAc-2EHA-NMA-AA quadripolymer emulsion;

VAc-2EHA-NMA-AA四元共聚乳液的制备

Study on preparation of St-BA quadripolymer water-borne anti-corrosive coating emulsion and its properties;

苯-丙四元共聚水性防腐涂料乳液的合成与性能研究

The crystal structure of the quaternary system ceramics was examined by using X-ray diffraction (XRD).

04)四元系陶瓷,并考察了 Ba取代量变化对 PMNS-PZT 四元系陶瓷结构和性能的影响。

The crystal structure of the quaternary system ceramics was examined using XRD.

05O3(PMNS-PZT)四元系陶瓷,考察了Sr取代量对其结构和性能的影响。

Isopiestic measurements were made for the quaternary system H_2O+La(NO_3)_3+Pr(NO_3)_3+Nd(NO_3)_3 and its binary sub-system H_2O+La(NO_3)_3, H_2O+Pr(NO_3)_3 and H_2O+Nd(NO_3)_3 at the temperature 298.

实验结果表明 ,上述四元系与其 3个二元亚系之间存在简单共性 ,在实验误差允许范围之内 ( |Δ|≤0 0 0 10 ) ,该四元系符合偏理想溶液模型。

The PEO-grafted cationic polyacrylamide microparticles were synthesized via inverse microemulsion tetrapolymerization of acrylamide(AM), acryloyloxyethyl trimethylammonium chloride(ADAMQUAT), PEO-macromonomer(PEO-1000) and N,N′ -methylenebisacrylamide(Bis).

采用反相微乳液聚合的方法合成了丙烯酰胺/丙烯酰氧基乙基三甲基氯化铵/聚氧乙烯大单体/N,N′-亚甲基双丙烯酰胺的四元共聚物微粒。