查询词典 hyperbolic cylindrical surface

The result showed that the surface architecture and ultrastructure of I.punctatus ' gill and secondary gill lamellae were similar to those of other teleosts. The surface of gill arches and gill rakers was covered with pavement cells which were characterized by circular microridges, and secreting-holes were found among cells on the surface of gill arches. The base part of gill rakers were bigger in terms of diameter. The pavement cells' surface of gill filaments' middle part was characterized by microridges with fine lateral protuberances on both sides which were either fused or interruped, while the microridges disappeared on the pavement cells' surface on both top and base parts of gill filaments, forming dense granulated protuberances. The height and interlamellar space of secondary gill lamellae in I.punctatus were relatively higher and bigger, respectively.

结果表明，斑点叉尾鮰鳃的表面结构和微细结构与其他硬骨鱼类基本相似，鳃弓和鳃耙表面被具环形微嵴的扁平上皮细胞所覆盖，鳃弓表面细胞之间有孔洞；鳃耙基部较粗壮；中部鳃丝上皮细胞表面的微嵴两侧有细小的横突，有些微嵴出现融合或间断；端部和基部鳃丝上皮细胞表面的微嵴消失，形成密集颗粒状突起；鳃小片的高度和片间距较大。

The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches.

本发明包含一个具有三个光学表面的自由曲面棱镜和一个微型图像显示器，自由曲面棱镜采用折射率大于1的塑料玻璃材料，自由曲面棱镜的三个自由曲面光学表面均为凹形面，它们应满足三个面型方程之一，并且各表面的位置关系应满足三个条件方程，由LCD发出的最大视场上边缘光线在第二自由曲面上的入射角应满足全反射条件，像源元件为0.61或0.59英寸的LCD。

Ceilings should be ac-cessible for cleaning, and ideally, the surface should he coved where ceilings and walls meet In many food-production areas, the ceiling must have thermal in-sulation This may be necessary either to prevent surface condensation or to reduce the energy costs of maintaining low environmental temperaturesWalls should also be insulated, to prevent surface condensation They should be free from rising damp and be protected, where appropriate, from damage by forklift trucks, by use of a guard rail In modern factories, there is always a coved surface where walls meet the floor It is also usual for there to be a coved surface where walls join at right angles.

天花板应该交cessible清洗、最理想他表面复岩下天花板和墙壁应满足许多粮食产区，天花要有热的绝缘要么这可能需要防止或者减少表面凝结能源维护成本低，对环境温度也应绝缘墙壁、应防止表面凝结他们免于受到保护和潮湿上涨，酌情从叉车损坏，用现代铁工厂门卫、凡事总有复岩面墙那里迎接地板也是平日没有可能凡参加面复岩墙成直角。

A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在气液两相流作用条件下，通过室内自制装置，对管材钢J55做了系列冲刷-腐蚀试验，结果表明，气液两相流对钢管内表面冲刷－腐蚀的机理是钢管内表面会受到液体介质的快速腐蚀，生成腐蚀产物，同时钢管金属表面不断被具有高流速的气液相交替地冲击，不断地从金属表面脱去保护膜或腐蚀产物，裸露的钢表面又会被介质快速腐蚀形成腐蚀膜后，再被两相流冲掉，如此反复，造成管内金属表面膜的连续破坏，使腐蚀加剧，最终导致钢铁表面的冲刷腐蚀失效。

With the aid of the Laplace transformation, an analytical solution for the motion of the plane standing wave in the presence of free surface charge is obtained. Moreover, the motion of the cylindrical standing wave in the presence of free surface charge is solved using semi-analytical method.

通过变换的方法，求得了平面驻波漏电介质模型解析形式的初值解，并用半解析半数值的方法求解了柱面驻波漏电介质模型的初值解。

On the issue of surface feature extraction, the reliable approaches to extracting planar, spherical, cylindrical and conical surface is tackled.

面特征提取部分探讨了从深度图象中可靠提取平面、球面、圆柱面和圆锥面特征的方法。

Cylindrical Surface Conical Surface Tribology Principle Heat Transfer Principle

圆柱面；圆锥面；摩擦学原理；传热学原理

Particularly applicable to automobiles, motorcycles, electronics, aerospace, oil, bearings and other industries for Rotational Parts of the cylindrical surface, circular face, conical surface, end, grooving and various public and imperial thread bulk, efficient, high-precision automatic processing.

特别适用于汽车、摩托车、电子、航天、石油、轴承等行业对回转体零件的圆柱面、圆弧面、圆锥面、端面、切槽及各种公、英制螺纹进行批量、高效、高精度的自动加工。

The company's CNC machine tools in general compact structure, beautiful appearance, simple operation, with the processing of cylindrical surface, conical surface, arc noodle, end, grooving, drilling and processing Reaming various thread functions, applicable to electrical, pneumatic , industrial instrumentation, automotive, motorcycle fittings, fasteners, photography, hardware tools, plumbing pipes and other parts manufacturing and processing characteristics.

本公司的数控机床总体结构紧凑，外型美观，操作简单，具有加工圆柱面、圆锥面、圆弧面、端面、切槽、钻铰孔及加工各种螺纹功能，适用于电器、气动、仪表工业、汽车、摩托车配件、紧固件、照相、五金工具、水暖管道及其他零件制造加工等特点。

Impression cylinder: The cylindrical surface of a cylinder or a rotary press, which takes the paper and presses it in contact with the printing surface.

压力圆筒：圆压式或轮转式印刷机上的圆形压印表面，它承接纸张，并把它压向版面，使它与印纹接触。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。