四元

The electronic structure of a quaternary alloy has been investigated using EHT band calculation method.

用EHT紧束缚能带计算方法，研究了四元合金的电子结构。

According to the experimental data, the equilibrium phase diagram and density-composition diagram of the quaternary system were plotted.

依据实验测定的平衡溶解度数据及对应的平衡固相，绘制了该四元体系的平衡相图以及其密度-组成图。

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。

The equilibrium solubilities of the quaternary system EuCl3-CdCl2-HCl-H2O was determined at 25 ℃ and the corresponding equilibrium diagram was constructed.

测定了四元体系EuCl3-CdCl2-HCl-H2O(25℃)的相平衡溶度数据，绘制了相应的溶度图。

Solubilities and densities in solution of the system were determined experimentally. The equilibrium phase diagram and the density-composition diagram of the quaternary system were plotted using experimental data.

依据实验测定的平衡溶解度数据及对应的平衡固相，绘制了该四元体系的平衡相图以及其密度－组成图。

Simulation shows the algorithm validity and the attitude motion equation in error quaternion are effective to omnidirectional attitude control.

仿真表明了全角度算法的正确性，以及基于文中的四元数姿态误差方程可有效进行导弹全方位姿态控制。

With the experimental data, operation time of contour extraction of binary image represented by rectangle NAM is 0.31 to 0.86 times of that of image represented by matrix, operation time of Euler number computing of binary rectangle NAM image is 0.11 to 0.63 times of that of the pattern algorithm, operation time of connected component labeling of binary image represented by rectangle NAM is 0.08 to 0.37 times of that of image represented by matrix, 0.05 to 0.12 times of that of image represented by quadtree.

实验数据表明，采用矩形NAM表示的二值图像轮廓提取算法的执行时间是矩阵表示的0.31至0.86；矩形NAM表示的欧拉数计算执行时间是模板算法的0.11至0.63；矩形NAM表示的连通区域标记算法执行时间是矩阵表示的0.08至0.37，四元树表示的0.05至0.12。

Known, the Euler angles and quaternion is a correlation between them.

众所周知，欧拉角和四元数是存在对应关系的。

Rabbits received naloxone HCl intracerebroventricularlyor naloxone methiodide IV, a quaternary compound that does notcross the blood–brain barrier, 5 min before FENT treatment(5 or 50 g/kg, IV).

使用 FENT 治疗（5或50 g/kg ，静脉注射）前5min ，向家兔脑室内注射盐酸纳洛酮或静脉注射甲硫丁氨酸纳洛酮（一种四元化合物，不能透过血脑屏障）。

This paper used anhydrite associated with ferruginous mineral from Cheng Chao iron ore as primary raw material to develop successfully a new type of light wall material under the action of G N M J four compound excitation system and FX compound reinforcing fibre with suitable forming procedure.

本研究以武钢矿业公司程潮铁矿共生的硬石膏为主要原料，在广泛探索的基础上，筛选出G－N－M－J四元复合激发体系，有效地激发了硬石膏的活性，在FX复合纤维的增强作用下，采用合适的成型工艺条件，成功地研制出一种新型的轻质墙体材料—纸面硬石膏板，对试制样品的测试结果表明，各项性能达到或接近以半水石膏为主要原料的纸面石膏板的国家标准，为综合利用程潮铁矿的矿物资源开辟了新的途径，对硬石膏在新型建筑材料领域中的开发应用，更有着开拓性的意义。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。