查询词典 concave line

Concave shape, incurvation, incurvature

a。 凹凸的，一面凹一面凸

His argument, known as the Hockney-Falco thesis, is that great artists of the past, such as Ingres, Van Eyck, and Caravaggio did not work freehand, but were guided by optical devices, specifically an arrangement using a concave mirror to project real images.

在那部著述中，他暗示过去最伟大的艺术家们，譬如安格尔、范·爱克，和卡拉瓦乔不是空手工作的，而是采用了光学设备的导引，特别是采用一面凹镜的一种安排，用以投影实像。

Based on the analysis of the structure characteristics of the plastic product with inner concave loop slot and the mold design projects,an injection mold for this kind of part was designed.

在分析环槽形内侧凹塑件结构特点及模具设计方案的基础上，设计了此类塑件的注射模。

Considering the effect of load and helical angle on the instaneous width of contact area, this paper uses the BEM program for calculating the deformations at different place along the width of convex tooth and concave tooth of W-N gear and gets the relevant deformation curves.

并首次应用三维边界元方法，在计入齿面瞬时接触迹宽度随外载、螺旋角而变化的条件下，计算了双圆弧齿轮凸齿面端部和凹齿面端部的变形。

On the other hand,Raymond considered systemsgoverned by linear elliptic and parabolic differential equations with the integrand in costfunctional has to be concave in the state variable.

在那里，指标泛函中的被积函数关于状态变量必须是凹的。因而，那里所给的条件和Cesari条件是互不包含的。

It is considered that shaping the concave canopy structure by aitificial measures such as chemical control at intervals and belt-shape intercrop of tall and short cultivars can be an important way to further improve maize population yield.

研究认为，通过人为措施(如隔带化控和高矮品种带状间作)塑造凹形群体结构是进一步提高玉米群体生产力的重要途径。

Furthermore, it not only has better interpretability to the concave data sets than the existing depth functions, but also has a relative simple computation, which ensures its practicality.

相比现有数据深度而言，它对凹形结构的数据具有更好的深度解释。更为重要的是它的计算比较简单，从而保证了它的实用性。

Deep structure in the mantle concave or convex edge of mantle, Moho-discontinuity isobath or local turning control the regional metallogenic belt in distribution; major fault zones and their recombination region control the metallogenic zone; great fault depression, that is, overall depression in the context of uplift, that is, or local uplift in the background of overall fault depression, or the local stronger depression in the background of overall fault depression, all of these special structures are often the enriched areas of ore-forming elements and potential prospects.

深部构造，在幔凹或幔凸的边缘、莫霍面等深线密集或局部突出地段、扭曲端等控制区域成矿带的展布；大断裂带及其复合部位控制矿集区和大型矿床的产出；大断裂断陷构造，即隆中坳，或总体坳陷背景下的局部隆起，即坳中隆，或总体坳陷的背景下的局部更为强烈的坳陷，即坳中坳，所有这些特殊的构造部位，往往也是成矿元素的富集区和成矿远景区。

Self-buckled kerbstones consist of two different layers of compound cement. They are of many kinds of designs and colors. On the outer layer, there are illuminating materials made by special materials. The inner layers are made of common cement, so they are low in price. At the two ends of the kerbstone, there are concave and raised troughs for self-buckling. So they are convenient in installment. Different size of holes for draining water can be drilled according to actual situation.

自扣式侧石是由两层不同颗粒级配比的复合混凝土构成，具有多种图案和色彩，面层附有由特殊材料制作成的发光材料，内层为普通混凝土，成本低廉；侧石的两端有凹凸卡槽自扣连接，安装方便，不易沉降和倾斜；还可根据不同需要的距离可在不同位置上留有大小不同的排水孔，雨天能够及时排除路面积水，从而丰富花池，花坛及道路两侧绿化带水源。

Labellum conspicuous, usually yellow or orange at center, with some red veins or marks, often white at margin, usually obovate, broadly concave.

唇瓣明显，通常黄的或橙在中心，具一些红色的脉或斑点，通常白色的在边缘，通常倒卵形，宽凹。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。