查询词典 sea-surface

The results show that the drag reduction effect is obvious in turbulent flows due to the riblet surface with the comparsion of the momentum loss thicknesses and wall friction stresses of smooth surface and riblet surface.

通过对比脊状表面与光滑表面动量损失厚度和壁面摩擦应力，反映了动量损失厚度的大小与壁面摩擦应力的大小具有一致性，充分证实了脊状表面在湍流中具有一定的减阻效果。

The results showed that compared with smooth surface, there was secondary vortex in micro flow field;, the viscous sub-layer in the near region of riblet surface was thicker; turbulence intensity was depressed and riblet surface was hydrophobic.

研究表明，与光滑表面相比，脊状表面微观流场结构中存在2次涡，近壁区的黏性底层厚度比平板的要厚得多，湍流度显著降低，且脊状表面表现出明显的疏水性。

The results showed that compared with smooth surface, there was secondary vortex in micro flow field, the viscous sub-layer in the near region of riblet surface was thicker; turbulence intensity was depressed and riblet surface was hydrophobic.

研究表明，与光滑表面相比，脊状表面微观流场结构中存在"二次涡"，近壁区的黏性底层厚度比平板的要厚得多，湍流度显著降低，且脊状表面表现出明显的疏水性。

For the slope protection,domestic and foreign have various methods,such as:clean surface, and shotcrete stone surface and the use of concrete,asphalt,riprap,etc.,but these have a fatal weakness,the use of clean face,and shotcrete stone surface and the use of concrete,asphalt,riprap protection methods such as the slope,often due to excessive destruction of the human impact of the original natural and ecological environment.so that the entire road is almost formed a gray line,and While these protective measures outside the slope formed a protective layer of solid layer,but if there is a protective layer of water into the lower water flow and form,these protective measures will also be destroyed.

对于边坡的防护，国内、国外均有多种方法，比如：抹面、喷浆、石砌护面以及利用混凝土、沥青、抛石等等，但这些都有着致命的弱点，利用抹面、喷浆、石砌护面以及利用混凝土、沥青、抛石等方法进行防护的边坡，往往由于过多的人为影响破坏了原来的自然生态环境，使整条公路几乎形成一条灰色的路线，同时，这些防护措施虽然在边坡外面形成了一层坚固的防护层，但只要有水渗入防护层下部并形成水流时，这些防护措施也将被冲毁。

In this article, the effect on the surface topography of the same material was analyzed by different processing methods, the value of surface parameter arithmetic mean R, root-mean-square roughness R and gradient root-mean-square value Z were used to appreciate the surface topography, and the data were processed with the software Matlab.

分析不同加工方法对同一种材料表面形貌的影响，采用表面形貌统计参数中的轮廓高度算术平均值R、轮廓高度均方根值R、坡度均方根值Z，对表面形貌进行评价，结果表明，准分子激光加工表面的R、R，和Z，值均比研磨加工表面小。

In this article, the effect on the surface topography of the same material was analyzed by different processing methods, the value of surface parameter arithmetic mean Ra, rootmean-square roughness Rq and gradient root-mean-square value Zq were used to appreciate the surface topography, and the data were processed with the software Matlab.

分析不同加工方法对同一种材料表面形貌的影响，采用表面形貌统计参数中的轮廓高度算术平均值Ra轮廓高度均方根值Rq、坡度均方根值乙对表面形貌进行评价。

The results indicated that:(1) plant height and tillering number decreased, and root length, root surface area, root volume and rootlet number increased under drought stress; straw mulched on surface soil and pig manure mixed in soil could improve the growth and morphological property of rice root, while straw mixed in soil and pig manure mulching had no significant effects;(2) the contents of chlorophylls and the activities of SOD, POD and CAT decreased significantly under drought stress, and straw mulching on surface soil and pig manure mixed in soil could restrain these decreases.

结果表明：①干旱胁迫下水稻株高降低、分蘖数减少，根系则表现出主根伸长、支根增多、根表面积和根体积增加；秸秆表施和猪粪混施可明显改善水稻的生长和根系形态，而秸秆混施和猪粪表施的改善作用不显著；②干旱胁迫下叶片叶绿素含量显著降低，超氧化物歧化酶、过氧化物酶及过氧化氢酶活性均显著下降，秸秆表施和猪粪混施能够在一定程度上抑制这种下降幅度。

The surface of conventional engineering part is composed of simple analytical surfaces and four-boundary ruled surface primarily. Therefore a point cloud segmentation method based on those feature surfaces is proposed. Several algorithms to identify the simple analytical surface feature are investigated and discussed. The theory of fitting scattered point to B－Spline and Bézier surfaces is introduced and a fitting method based on four boundary and point set is also discussed. Moreover, anew method to recover the fix-radius rolling ball blend is proposed and discussed in detail.

常规工程零件的外表面中包含了大量的特征曲面，如简单解析曲面和四边直纹面，因此，本文提出基于特征曲面的的点云分割方法，研究几种识别简单解析曲面的算法；研究由点云拟合B－Spline和Bézier曲线的理论基础，总结曲面拟合的几种方法，提出一种反求定半径滚球圆角的方法。

The linear relation of Sagitta enflata abundance with surface water temperature was remarkablely positive. The relation of Sagitta enflata and Sagitta nagae abundances with surface salinity and that of Sagitta bedoti with surface temperature and salinity were showed respectively by Yield Density mold.

肥胖箭虫与表层温度线性关系极其显著，肥胖箭虫和海龙箭虫与表层盐度的关系以及百陶箭虫与表层温度和表层盐度的关系符合Yield Density模型。

The surface activity of Hibiscus syriacus has been studied and shows thatHibiscus syriacus has good surface activity.The influence of temperature,saltness,water hardness and pH on the surface activity of its aqueous solutionsis also studied and shows little influnce.Also the mixture systems of Hibiscussyriacus with some anioic surfactants have been studied and the results show thatthe mixture systems can produce remarkable synergism.

天然表面活性植物木槿叶的应用研究本课题对天然植物原料木槿叶提取物中的表面活性物的性质(临界胶束浓度、表面张力和起泡性能)及其影响因素(温度、pH、水硬度和盐度等)进行了系统的研究，结果表明木槿叶表面活性物具有较好的表面活性，且它的cmc和〓在一定范围内受一些因素的影响也不大，是一种理想的香波原料；同时也研究了木槿叶活性物与其它温和型的阴离子表面活性剂的复配体系，表明具有明显的协同增效效果。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。