截面

The prestressed concrete simple beam compares reinforced concrete beam to compare, the merit includes: Uses the high marking concrete, section minification, the dead weight reduces, may increase the spanning ability; Uses the high strength steel bar, may save the steel products; But raises the sorghum body large scale the crack resistance, increases beam's durability, the concrete total cross-section bearing, has fully displayed the concrete resistant to compression performance superiority, also enhanced Liang's rigidity.

预应力混凝土简支梁较钢筋混凝土梁相比，优点有：采用高标号混凝土，截面尺寸减小，梁体自重减轻，可以增大跨越能力；采用高强度的钢筋，可节约钢材；可大幅度提高梁体的抗裂性，增加梁的耐久性，混凝土全截面受压，充分发挥了混凝土抗压性能的优势，也提高了梁的刚度。

The invention relates to a microlens configuration having a substantially circular form is constituted of a part of one circle or aspheric curve at any section when a section is taken at a face which is vertical to a major axis or a minor axis of the microlens configuration.

本发明涉及一种具有基本上环形的微型透镜结构，当在垂直于所述微型透镜结构的长轴或短轴的任何一个面取截面时，该结构由在任何截面的圆形的一部分和非球面曲线构成。

The cross section data for the electron impact excitation of the triplet of the hydrogen and its isotopic molecules, which can not be available from the literature have been calculated on the basis of Morse potential function, Franck-Condon theory and semi-classical Gryzinski method.

对于尚无反应截面的氢及其同位素分子电子碰撞激发到三重态然后发生解离反应，作者基于莫尔斯函数、弗兰克－康登原理，采用半经典的Gryzinski方法计算了这一反应截面。

The 3-D multigroup P3 neutron transport Monte-Carlo code MCMG was developed by adding functions and renewed edition. It can equip various microscopic or macroscopic cross-sections. The cross-section input was simplified. The edition was developed from Ⅰ to Ⅱ. The multigroup cross-section was produced by ENDF/B-Ⅶ library.

三维多群P3中子输运蒙特卡罗程序MCMG通过版本更新和功能扩充，能够配备各种多群微观、宏观截面库，截面输入文件进一步简化，版本从Ⅰ发展到Ⅱ，参数更新到ENDF/B-Ⅶ库。

PRSSOL prints the section nodal andsection integration point results.

PRSSOL 打印截面节点和截面积分点结果。

According to the destructive property of normal section on by force, a formula to calculate its strength is set up.

根据正截面受力破坏特点，建立了正截面强度计算公式。

The total reaction cross section is one of the most important quantities forcharacterizing the properties of nuclear reaction.

核反应总截面是表征原子核反应基本特征的一个基本量，从实验测得的核反应总截面中可以得到有关核反应、核结构和核内核子分布的信息。

On the basis of the orthogonal experiment, nine groups of structure parameters of variable cross_section tube s are issued.

根据正交实验设计提出了 9种变截面管强化传热管的结构尺寸，并由实验结果回归得到了变截面管的传热与阻力关联式。

It is shown that the parameterized model potential method of included polarization correction is effective to calculate photoionization cross sections.

使用参数形式的极化模型势计算光电离截面是一种有效的方法。标签光电离截面模型势波函数 photoionization cross section model potential wave function

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，弹性杆的位形表达为截面的弧坐标历程，根据平衡微分方程得到了两端受力螺旋作用时的直线平衡特解，导出了线性化扰动方程及其通解，积分常数根据两端铰支时的边界条件确定，并根据其存在非零解的条件得到弹性直杆精确模型的Greenhill公式，表明稳定域为一对称的封闭区域，拉/压和剪切对稳定性的影响取决于：拉/压柔度与剪切柔度之差，抗弯刚度和杆长这三个因素

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷