二层的

Compared with traditional method such as Moser, this method only sets the second sources on the interface between two adjacent layers, and on which the ray directions make changes.

界面二次源法是最近提出的一种最小走时射线追踪方法，尤其适合层状介质中走时和射线路径的计算。

The problem of the dynamic interaction between tall building and neighboring multistoried building is expounded and analysed using the method of twodimensional explicit finite element in this paper. Some useful conclusions are obtained.

阐述了高层建筑与相邻多层建筑间的动力相互作用问题，应用波动理论，采用二维显式有限元的方法对这个问题进行了分析。

For case study, db4 optimum wavelet base is used to transform GR, SP and AC from a well in Shengtuo oilfield. By this transformation the logging data are expended from one dimensional depth space into two dimensional depth-scale space.

以胜坨油田某井为例，采用db4最佳小波基分别对自然伽马、自然电位和声波等测井曲线进行了多尺度分析，将一维测井数据拓展为二维深度－尺度空间，提取小波变换系数的时频色谱信息和能量信息，从而确定出测井曲线识别准层序界面的最佳尺度。

Finally, according to the characters that the inner and outer edge of double-layer eyelid are approximate parallel and the gray distribution changes sharply on the edge of inner eyelid, take the fitting curve acquired in first eyelid location as a template, and shift it down parallel to detect the position where gray value changes abruptly.

最后，根据双层眼睑的内外层边缘近似平行、而且在内层眼睑边缘处出现灰度跳变这一特点，以第一次定位所得拟合曲线为模版，平行下移搜索灰度跳变位置，完成对双层眼睑的二次定位。

Polycarbosilane was used as the preceramic for matrix formation and 2D layered 0°/90° fabrics as the reinforcement to fabricate C/SiC composites. The effect of pyrolysis temperature and slurry concentration on the properties of the composites was systematically studied.

采用聚碳硅烷作为碳化硅先驱体，以二维0°/90°正交编织碳布叠层后作为增强体，采用真空压力浸渍的方法制备了C/SiC复合材料，研究了裂解温度和浆料浓度对复合材料性能的影响。

In particular they discovered that the electrons in graphene behave like relativistic particles that have no rest mass and travel at about 106 metres per second.

石墨烯（Graphene，见 http：//www.wiki.cn/wiki/Graphene ）是由单一层碳原子构成的二维晶体，是一种结合了半导体和金属属性的新材料。

Romping ground for first family pets, the South Lawn lies under a scrim of snow and scattered dog toys.

第十二段：南草坪上铺着一层薄纱般的细雪，狗儿的玩具散落一地，这是第一家庭宠物们的游乐场。

The best method for isolation and purification of β-dihydroagarofuran sesquiterpene in Celastrus angulatus is alternate normal-phase and reserve-phase high performance liquid chromatography.

结果表明，对苦皮藤中富含二氢沉香呋喃倍半萜类化合物部分进行分离的过程中，采用正相、反相高压制备柱层析交替进行的方法最为有效。

Isolation and purification of dihydroagarofuran sesquiterpene in Celastrus angulatus was preformed with normal-phase and reserve-phase high performance liquid chromatography and detected with TLC and HPLC.

为了优化苦皮藤中二氢沉香呋喃倍半萜类化合物分离纯化的方法，应用正相及反相高压制备柱层析相结合的方法进行分离纯化，以TLC及HPLC确定制备流动相条件并跟踪检测其分离效果。

The two issues arose thousands layer wave, the silent right in much more silent year in our country system again contain new issue.

二石激起千层浪，在我国沉默多年的沉默权制度又有新的争论。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐