二面的

Content of the course consists of:(1)Basic Theories of Polynomials ;(2)Linear Algebra: topics on basic matrix theory, determinant, system of linear equations, vector space, linear transformation, eigenvalue problems, inner product and Euclidean space , and quadratic form etc.;(3) Analytic Geometry: topics on algebraic operations of vectors, coordinates, lines and planes, curves and curved surfaces, etc.

学习本课程后，学生应学会用线性空间与线性变换的观点处理包括线性代数方程组在内的有关理论与实际问题；学会熟练地运用矩阵工具；本课程还学习基本的多项式知识和空间解析几何的基本知识。课程内容包括几个主要部分：（1）多项式代数；（2）线性代数：矩阵，行列式，线性代数方程组，向量空间与线性变换理论，特征值问题，欧氏空间理论，二次型等；（3）解析几何：几何空间向量代数，通过建立坐标系以及借助向量方法研究空间平面与直线及点﹑线﹑面的相互关系，借助曲面方程研究空间曲面，尤其是柱面，锥面，旋转面和二次曲面以及曲面的交线等。

Methods The left ventricular diastolic function,the blood speed during quick filling phaseof left ventricular of the mitral valve orifice,the peak value of the late phase of left ventricular diastolic pariod;E/A ratio,the time for isovolumetric relaxation phase of left ventricular,the reducel time of peak E,and the distance between peak E of mitral valve and intervertricular septum of left ventricular were measured respectively.

摘要］ 目的应用彩色多普勒超声心动图测定冠心病左室舒张功能，临床提供可靠的诊断及治疗依据方法分别测定冠心病组及对照组的左室舒张功能：二尖瓣口左室快速充盈峰值血流速度即E峰；左室舒张晚期峰值速度即A峰；E/A值，左室等容舒张时间，E峰减速时间，二尖瓣叶E峰与室间隔左室面的距离。

Questions in this content area are based on an understanding of the quadratic formula, rational and radical expressions, absolute value equations and inequalities, sequences and patterns, systems of equations, quadratic inequalities, functions, modeling, matrices, roots of polynomials, and complex numbers.

中等代数（ 15 ％）。这方面的考试内容包括理解二次公式，有理式及根式，绝对值方程和不等式，序列，方程组，二次不等式，函数，建模，矩阵，多项式的根以及复数。

In Luo Zhong-rong"s modern compositions, the pitch organization and the form of it"s structure hold the prominent position and issue significant function in music context, and the researches of these aspects in this dissertation occupied referentially also a more wide space. The first three chapters introduced three kinds of pitch organization used in these compositions: serial set, twelve-tone tonality and pentatonic aggregate.

音高的组织与结构方式在罗忠铬的现代音乐创作中有着十分突出的作用，论文在这方面的研究也相应占据了较大的篇幅，前三章分别介绍了作曲家在这些创作中使用的三种音高组织："序列"、"十二音调式体系"以及"五声性十二音集合"。

Based on the elevation document of the specimen, we can get various two-dimensional stylolite shapes which contain more comprehensive morphology information of stylolities similar to that of natural ones.

通过处理缝合面的高程文件得到了各种形态的二维数字剖面，这些剖面更加全面地反映了标本的二维形态信息，且与天然缝合线的相似性较大。

Corolla purple to blue or white or yellow to red, zygomorphic, inside glabrous or puberulent; tube campanulate-cylindric to broadly tubular, sometimes ampliate basally, throat sometimes constricted, 1-4 X longer than limb, 2-8(-12) mm in diam.; limb slightly 2-lipped to 2-lipped; adaxial lip 2-lobed, slightly shorter than to nearly as long as abaxial lip; abaxial lip 3-lobed to 3-sect, lobes equal or subequal, apex rounded to acute.

花冠紫色到蓝色或白色或黄色对红色，左右对称，被微柔毛的里面无毛或；圆筒状的钟状的筒部对宽管状，有时基部，有时缢缩的喉，X长于瓣片，2-8毫米直径；对二唇形有点二唇形的瓣片； 2裂的正面唇，稍短于到近等长于背轴唇；背面的唇3浅裂的到3全裂，裂片等长或近等长，先端圆形的到锐尖。

The results revealed that screwdrivers with triangle shaped handle could help subjects produce the maximum torque. Besides, using screwdrivers with hexagon shaped handle spent the least time, generated the minimum biceps muscle activity, and bad the least subjective fatigue rating. Moreover, wearing an anti-static glove or being barehanded can produced the maximum torque and spent the least time as well. Experiment 2 evaluates the handle diameter of screwdriver (30 mm, 34 mm or 38 mm) and operation plan. The results showed that the torque increased with the increase of the radius, the operation time and the brachioradialis muscle activity also increased with the increase of the radius.

本 研究共分为三次实验，实验一分析握把造型(八角形、锐角六角形、圆角六角形、枪型、圆角三角形)与手套(棉质手套、防静电手套、赤手)的影响，结果显示三角形造型握把可产生最大扭力，六角形造型握把的锁附螺丝时间最短、二头肌肌肉活动度最低、主观整体疲劳评比最低，防静电手套与赤手状态的扭力最大并且锁附螺丝时间最短；实验二比较握把直径(30 mm、34 mm、38 mm)与作业面的影响，结果显示直径越大扭力越大，但直径越小锁附螺丝时间则越短，且肱桡肌肌肉活动度越低。

The spinel-garnet lherzolites locate at the depth about 60 km, right in the transition from spinel lherzolite to garnet lherzolite.

上地幔则以尖晶石二辉橄榄岩为主，在其接近莫霍面的42-45km处存在尖晶石辉石岩层，在55-65km之间则存在石榴子石辉石岩层，尖晶石-石榴子石二辉橄榄岩出现于60km处。

From 1998 to 2002, China's investment in these areas totaled 580 billion RMB yuan.

一九九八年到二00二年，中国在环境保护和生态建设方面的投入达到五千八百亿元。

A dichroic interference filter is interposed between the two prism elements and is disposed at an angle of 221/2 to an input face on the first glass prism element.

将一块二向色干涉滤光片介入两个棱镜中，并使它倾向于第一面棱镜投入面的221 ~222 角之间。干涉滤光片是由含有二氧化硅和二氧化钛的沉积候补层制成的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷