表面光滑的

SEM observation of the earliest skeletal fossils from the late Sinian Dengying Formation in southern Shaanxi, China indicates that the tube wall of Sinotubulites levis is encrusted by phosphate spherical and filamentous structure, possibly reflecting microbially mediated phosphatization of tube wall. Three preservational microfabrics detected, namely mat-like structure formed by intertwining of rigid filaments, densely packed spheres with a distinctive framboidal external surface and hollow centers and tightly packed spherical bodies with extremely smooth external surface, may refer to different types of mineralized cyanopytes.

陕南晚震旦世高家山生物群中骨骼化石的电镜扫描显示，Sinotubulites levis壳壁中具有丰富的磷酸盐化球状和丝状体，可分为3种不同类型的微生物组构：1由相互缠绕的丝状体所组成的藻席状组构；2由外表面成莓球状，内部中空的球状体紧密堆叠所形成的组构类型；3由表面极为光滑的球状体堆叠所形成的组构。

I picked melons according to experience, should be able to select from the following aspects: guapi smooth surface, pattern clear lines clear underside yellow, is ripe melon; while the opposite surface of hair, shiny dark, piebald, and unclear lines, is unfamiliar with the melon.

答：我挑瓜，根据以往经验，应该可以选择从以下几个方面：瓜皮表面光滑，图案清晰的线条清晰的底部黄色，是熟瓜；而相反的头发表面，有光泽黑，花斑和界限不明，不熟悉的甜瓜。

When the saturated vapor of pure R11 or R113 was condensed on the PF tubes under free convection conditions, the HTCs (based on the outside area of the base tube, the same be1ow) were 14 to 20 times those of the smooth tube because the condensate surface tension made the condensate film on fin surfaces thin and the rough saw-toothed fin surfaces disturbed the boundary layer in the condeneate film.

纯R11、R113的饱和蒸气在大空间花瓣形翅片管上冷凝时，由于凝液的表面张力将翅片表面上的液膜拉薄以及粗糙的锯齿形的翅片表面扰乱了凝液膜内的流动边界层，传热膜系数（以坯管外表面积为基准，下同）是光滑管的14—20倍。

Although the spiral parts is widely used, there is very few studies on the spiral buries parts and in the vicinity of the stress and strain analysis, and when studies on the force, often approximates the spiral surface to the smooth surface in computing, or obtains through experiments.

虽然螺旋状预埋件的应用广泛，但是关于螺旋状预埋件及其周边的应力应变分析的定量分析在国内外的研究却很少，在研究时往往通过试验获得数据，然后进行定性分析，或者将其螺旋状的表面近似成光滑的表面进行计算。

The pleural superficial blood vessels were smooth, while the constrictions of smooth muscle cells and round imprints of endothelial nuclei occurred on the surface of the subpleural and parenchymal arteriole and venule.

肺胸膜面浅层微血管的铸型表面光滑，胸膜下和肺实质内微动脉和微静脉的铸型表面可见平滑肌细胞形成的缩窄，以及圆形内皮细胞核的压痕。

The table cores (micro pills, small pills or plain tablets) to be film coated make continuous complicated orbital motion within a closed rotating drum under the action of a streamline guide plate. Controlled by computer and according to the optimum technological parameters, they are automatically sprayed with film coating medium while hot air under a negative pressure is led in from one side of an air distributing pipe at the center of the drum, clean hot air penetrates through the tablet core layers and is discharged after being collected to the other side of the air distributing pipe by a pore duckbill-shapedair paddle embedded in the tablet core layers, so that the film coating medium sprayed on the surface of tablet cores will dry rapidly and evenly, thereby forming a layer of solid, compact, neat and smooth surface film.

工作原则：表芯被filmcoated不断复杂轨道运动在一个封闭的旋转鼓下一个精简行动，并根据指导plate.controlled计算机优化技术参数他们是在自动喷filmcoating中型热风率领下负压是从一旁的空管中心散发的鼓热风清洁片核心层通过渗透和排出后收集到大洋彼岸的空中散发烟斗孔鸭嘴形在片中空中颤抖嵌入式核心层、使中等filmcoating表面喷洒干燥迅速、均匀地将芯片、从而形成一层坚实、紧凑、整齐、表面光滑电影。

The contribution of water concentration on the growth of carbon nanotubes was investigated. Scanning electron microscopy results showed that the grown CNTs in CH4/H2 gas mixure had chain-shaped structure and the diameter was about 40—90nm. With the addition of proper amount of water, the diameter of CNTs became uniform, and the surfaces of nanotubes were fully covered with nano-sized node-like structures. When more water was added, branched carbon nanotubes were synthesized.

场发射扫描电子显微镜结果表明，不加水时，制备出的碳纳米管直径不均匀，分布在40—90nm之间，呈链节状的结构；加入少量水时，制备出的碳纳米管直径比较均匀，集中在70nm左右，表面为瘤状结构；当水的流量进一步增加时，得到的碳纳米管表面光滑，出现了枝状结构。

Care must be taken to avoid having the etchant contact glazed porcelain surfaces since these surfaces will lose their gloss.

必须注意的是酸蚀过的表面不能用手触碰，否则，烤瓷牙会失去其光滑的表面。

Alloy powder welding technology progress Spray protection technology, with the successful development of low melting point powder spraying and welding in the developed based on a metal surface protection technology.

由于喷层经历重熔过程，计量泵涂层致密无孔，表面光滑平整，具有节约材料、质量好、效率高的优点，喷焊层表面硬度可高达HRC60-70，可以几倍甚至十几倍的延长水泵过流部件的使用寿命。

Two test pieces with satin surface and rib surface were designed under conditions of different distribution of heat flow density and different air flux.

我们对两块冷板实验件(内表面光滑与内表面带肋)就热流均匀分布与热流局部分布、不同空气流量的情况下进行了试验研究，然后采用三维通用形式N-S控制方程，建立适于工程应用的冷板三维流固耦合传热过程的数理模型。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。