查询词典 surface

With the Lagrange multiplier method , the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.

利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离，给出了曲线与曲面相切的条件。

The combined motion of grinding the transition arc maintains that the gyration center of the arc moves along the parallel line to the surface of the grinding wheel, and the gyration center of the oxide tool moves along the vertical line to the surface of the grinding wheel.

磨削刀片过渡圆弧时，过渡圆弧的回转中心到砂轮面的距离必须恒等于过渡圆弧的半径，磨削过渡圆弧的复合运动要保持过渡圆弧的回转中心沿平行于砂轮面的直线运动；刀片的回转中心沿垂直于砂轮面的直线运动。

The results indicate that improving temperature to reflux, using low polarity solvent as dispersion medium and proper molar ratio of tetrabutyl titanate to stearic acid can bring out good modification. The function of tetrabutyl titanate is to react with the surface hydroxyl groups and adsorbed H2O on the powder particles to produce new binding sites such as M—O—Ti—OC4H9and M—O—Ti—OH, which can easily react with the carboxylic acid. As temperature increases from room temperature to reflux temperature, the reactions between RCOO- and Ti change from coordinate bonds to covalent bonds, which makes the carbon chains of stearic acids more strongly bound with the powder particles surface.

研究结果表明，提高处理温度、适当增加复合改性剂中硬脂酸的量并选用极性弱的有机溶剂可达到比较理想的改性效果；钛酸四丁酯的作用是与粉体粒子表面的羟基以及吸附水反应产生偶联点，如M—O—Ti—OH，这些偶联点易于与羧酸反应；在低温时RCOO-与偶联点的Ti之间以配合物的形式发生作用，在回流温度下处理时，主要发生酯化反应，使硬脂酸更牢固地嫁接到粉体粒子表面，改性效果更好。

It also has a 4 surface Chamfer, 5 surface wear-resistant properties.

同样具有了4面倒角、5面耐磨的特性。

Chaptal found that the condensing surface must be rough, and the surface tension sufficiently low that the condensed water can drip.

chaptal发现，冷凝表面必须粗糙，表面张力足够低，该冷凝水可滴灌。

On the basis of Aumann,Meng Ya-qin and Ye Zheng-lin[13],Cuan-ying and Xue Ji-jun[16] have gained some conditions about characteristic polygon of the ruled surface,they used two Bezier curves in paralled plane as boundary curves to get ruled surface.

国内孟雅琴、叶正麟、爨莹、薛继军等人在Anmann方法的基础上，用位于两平行平面上的两条Bézier曲线作边界曲线，形成直纹面，并得到了它们可展时特征多边形顶点应该满足的条件。

The chemisorption-induced surface segregation can change greatly the surface component of the alloy as well as the chemisorption energy.

结果表明，化学吸附引起的表面偏析能够在很大程度上改变合金表面成分和化学吸附能。

The chemisorption of Fe adatoms on the ideal Si(001) surface andAu-passivated Si(001) surface are considered.

通过对Fe原子在不同位置的吸附能，吸附体系与清洁表面的层投影态密度以及电子转移情况进行计算。

Chernozem layer with the topography and different degrees of surface evaporation, there is meadow chernozem (humus content was high, a large number of stain and iron-TB), carbonate Black calcium soil (surface with carbonate accumulation) and the black soil salinity and the saline soil.

黑钙土层随地势和地表蒸发程度的不同，有草甸黑钙土（腐殖质含量高，有大量锈斑和铁质结核）、碳酸盐黑钙土和盐渍化黑土和盐渍土。

The red oil principal constituent is also the hot pepper surface, I boil the system red oil the concrete procedure: Adds 10 grams star anises, 10 grams Chinese cinnamon 15 kilogram salad oils, burns to 60% heat when leaves the fire, adds 1500 grams to do the hot pepper surface, 50 gram fragrant onion sections, 30 grams corianders, burns down 2 minutes after the fragrance overflow filters namely becomes, some chefs to cause the red oil the luster to be redder brightly also will boil in the system process to join 500 grams purple grasses.

红油的主要成分也是辣椒面，我熬制红油的具体做法：将15千克色拉油加10克八角、10克桂皮，烧至六成热时离火，加1500克干辣椒面、50克香葱段、30克香菜，中火烧2分钟至香气溢出后过滤即成，有的厨师为了使红油的色泽更加红亮还会在熬制过程中加入500克紫草。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。