四元

A salt or ester of carbamic acid, especially one used as an insecticide.

丙烯酰胺、甲代烯丙基磺酸钠等为原料，采用溶液聚合法合成出兼含膦酰基和磺酸基的四元聚合阻垢剂PMAAS，。。。

METHODS The HPLC system consisted of G1314A variable wavelength uv-visible detector, Hypersil ODS (4.6mm × 250mm,Sμ m), HP chemstation,Hp1100 series quaternary pump and vacuum degasser (G1322A). The mobile phase was acetonitrile:water (30: 70, v/v).

方法采用HP1100高效液相色谱仪(包括G1314A可变波长紫外检测器，HP化学工作站，G1322A真空脱气机，HP1100四元泵)，Hypersil ODS柱(4.6mm×250mm，5μm)。

A good agreement for the first system was obtained. Thermodynamics predicted the existence of hexahydrite MgSO46H2O which was absence in our measurements.

此次报道在K//Cl，NO3，SO(上标 2-下标 4)-H2O、Mg(上标 2+)//Cl，NO3，SO(上标 2-下标 4)-H2O同离子四元体系溶解度预测中的应用。

The crystal structure of three eremophliane sesquiterpenes and one bisabolane sequiterpene with two epoxies from above two Ligularia species were determined by X-ray four circle differactomer technique and single crystal structure analysis, and their stereostructure was further confirmed.

利用X-射线四元单晶衍射技术和单晶结构分析方法，测定了两种橐吾属中三个艾里莫芬烷型倍半萜及一个双环氧没药烷型倍半萜的晶体结构，进一步确定了它们的立体构型。

Electron-transporting oxadiazole monomer 2-phenyl-5-p-(N-acrylateamino-phenyl-1,3,4-oxadiazole was designed, synthesized and copolymerized with NVK, MMA and Tb2 to give a Tb-complex containg copolymer PKMOTb with dual transporting moieties.

设计并合成了一种具有电子传输性能的噁二唑类单体2-苯基-5--1，3，4-噁二唑，并将此单体和NVK、MMA、Tb_2共聚，合成了同时带有双传输基团和稀土金属配合物单元的新型四元共聚物PKMOTb。

Jerome's "Prologus Galeatus" and his prefaces to individual books; the capitula, or summaries of contents; and, in the first quaternion, certain materials which have been much discussed and have proved of the greatest service in tracing the history of the codex, among them dedicatory verses, a list of the books contained in the codex, a picture of the Tabernacle (formerly thought to be Solomon's Temple), a division of the Biblical books according to Jerome, another according to Hilary and Epiphanius, and a third according to Augustine.

除了文圣经的书籍，它包含了圣杰罗姆的& prologus galeatus &，而他的序跋，以个别书籍； capitula ，或摘要的内容，以及在第一次四元，某些材料，其中已有不少讨论，并已证明的最大的服务，追查历史上的法典，其中有奉献小诗，赠书书单载于法典，图片的帐幕的一个事业部，圣经书籍据杰罗姆，另据希拉里和epiphanius ，和第三条根据奥古斯丁。

I have avoided osg::Quat::slerp which interpolates between two quaternions as it is less accurate for our purposes.

我避免OSG的：：葛：：slerp这两个四元数插值，因为这是我们的目的不准确）。

We also give a method to compute the singular eigenvalues of some special quaternionic matrixes in this paper.

本文还给出了计算一些特殊四元数矩阵一个或多个奇异特征值的方法。

On the basis of the single-factor experiment, the quaternionic quadratic rotational combination was used to optimize the extraction process of total relative flavone that came from fermentation fluid of citrus, and we had used the response surface methodology to study the best horizontal extent of solid-to-liquid ratio, extraction time, alcohol density, the microwave power which affected the rate of total flavone relative extraction.

在单因素试验的基础上，采用四元二次通用旋转组合试验优化柑橘皮渣发酵液总黄酮的提取工艺，用曲面响应法对影响总黄酮得率的料液比，提取时间，乙醇浓度，微波功率的最佳水平范围进行研究。

In the last of this dissertation, we give necessary and sufficient conditions for the existence of and the expressions of perpositive semidefinite solutions and bipositive semidefinite solutions to some systems of quaternion matrix equations.

给出了某些四元数矩阵方程组有广亚半正定解，双半正定解的充要条件及其表达公式；研究了矩阵方程组的最小二乘解，极小范数的最小二乘解，在某些约束条件下的最小二乘解和极小范数的最小二乘解，给出了其有这些解的充要条件及其表达公式。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。