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曲线的曲率

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Besides common geometric measurements such as distances and angles,a new measurement of average curvature energy defined for boundary curve segment is included in the set to describe curve feature.

除了常见的几何测量外,提出了一种平均曲率能量的测量方法来描述边界曲线特征。

4A series of factor such as the difference about the centre of figure and the shear centre, curvature radius, central angle is discussed.

4对曲线梁中的剪、形心位置的差异以及曲率半径、圆心角、预应力大小、摩阻损失等内力影响因素进行了分析。

A high residual magnetic induction was obtained for the samples with a"knee point"located at a large magnetization site and a large curvature of circular segment on the magnetization curves.

磁化曲线上"膝点"位置较高及圆弧段曲率较大的合金具有较大的剩余磁感应强度。

In order for closed time-like curves to exist, there has to be a curvature of a specific form on spacetime.

为了使封闭时间样曲线存在,必须有曲率的一种具体形式的时空。

Data ofeffective parameters in line heat forming in shipyard are measured , and the effect principles oftemperature stress, order of heating line , curvature of plate,boundary condition and secondheating on shape formed are qualitatively analysed,and its curves and data tables are presented.

通过对船厂实船板加工数据的测量,定性分析温度应力、加热线顺序、加工板曲率、边界条件及二次加热对成型效果的影响规律,并给出其变化曲线和数据对比。

The whole machine performance curve of air blower made in accordance with controllable eddy ternary current rotator technology is complanate,its surging outflow is little, and it can ensure the design calculation astringentyunder the condition of wider blade or small curvature radius.

按照可控涡三元流转子技术制造的鼓风机的整机特性曲线平坦,喘振流量小,可确保宽叶片或小曲率半径条件下设计计算收敛。

The basic frequences of the two types of bridges are heightened by increasing vertical curve curvature of stiffening girder, setting vertical supporting members and stiffing connection.

增大加劲梁竖曲线曲率,桥塔处设置竖向支撑和缆梁跨中固结均能提高悬索桥的自振基频。

In this paper the curvature decision method to determine the turning points of fatigue crack growth rate curve has been proposed.

本文提出了确定疲劳裂纹扩展速率曲线转折点的数学方法——曲率判定法。

Derived flexibility curvature formula of two-dimensional structure, and the damage index of plate based on these formula, namely flexibility curvature matrix.

之后定义了等效柔度曲率变化率,给出了ECR-SD曲线并通过仿真模拟,回归了板结构的损伤程度的判别公式。

Through the numerical simulation analysis, the stress concentrationstatus before the crack splits has been researched, and the have been found. Therelationships between fracture splitting force 、 factor and opening angle,curvature radius、the depth of crackle groove have been carried out.

通过数值模拟,分析了应力集中程度,得出了预制裂解槽张角、曲率半径、槽深对裂解力及几何形状因子的影响曲线。

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随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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