截面

The main work is as followings: First, we use KE SI DA microscope for observing the appearance and configuration of bicomponent fiber. It was found in the bicomponent fiber it is a bilateral array for the PET and PTT. The cross section is anisomerous with PTT and PET side by side. After heat treating the shape of single filament becomes three dimensional curly and the number of crimp is biggest in the condition of relaxation. In the range of some tention, the bulkiness and crimpness fall obviously after the bicomponent fiber is treated with heat.

首先利用科视达观察了PTT/PET双组分复合纤维的外观形态，发现PTT/PET双组分复合纤维中PTT、PET两种组分呈双边分布，横截面呈不对称的哑铃状，PTT和PET两组分分居在横截面两侧，单丝经热处理呈现出三维立体卷曲，在无张力条件下卷曲数最多，在一定的张力范围内，随着所加负荷的增加，PTT/PET双组分复合纤维热处理后的蓬松性及卷曲性均下降显著。

In Pattern less casting manufacturing technology by using the disperse/cumuli prototyping principle of rapid manufacturing and resin sand moulding material, the three dimensional CAD model is stratified, sliced, the information of different high section are obtained, then these section are scaned, jet solidify, the resin sand prototyping or casting model is direct obtained.

无模铸型制造技术是以树脂砂为成型材料，利用快速成型技术的离散／堆积成型原理，对三维CAD实体模型进行分层切片处理，得到不同高度截面层的信息，采用截面扫描、喷射固化工艺，直接获得树脂砂铸型或铸造模具的一种方法。

A computing method is presented for studying the bending moment, axial force and curvity relationship at the section of prestressed concrete beam.

提出预应力砼截面弯矩－轴力－曲率关系的计算方法，并计算了不同预应力度下截面的弯矩－曲率关系。

The experimental data has proved that the method can be fit for the shaft with small curvity , especially in straightening the axis in auto′s gearbox.

提出预应力砼截面弯矩－轴力－曲率关系的计算方法，并计算了不同预应力度下截面的弯矩－曲率关系。

Several evaluation models of cylinder's taper are built based on the data measured on cylindricity measuring instrument using a double-section measuring method and a multi-section measuring method.

利用在圆柱度仪上采用两截面和多截面测量法测得的数据，建立适用于圆柱体锥度评定的几种模型，并建立了圆柱体端面和径向跳动在圆柱度仪上测量与评定的模型。

The parameterization of section contour data is carried out by the method of accumulated chord length, the reasonable math model on the selection of node vector is given, the approximating of NURBS curve to section contour data is carried out by the least square method and the most reasonable number of control point is obtained by the dimidiate algorithm, which makes the approximating of NURBS curve reach the extent of complete automation.

用积累弦长的方法对截面轮廓数据进行参数化；给出了节点矢量选择的合理数学模型；用最小二乘法对截面轮廓数抛进行了NURBS曲线的拟合；二分法寻找最优控制点的算法使NURBS曲线的拟合达到全自动化的程度。

The paper analyses the cooling process of symmetrical and dissymmetrical section profile with FEM software ANSYS, then adopt the data to guide the design of moulds cooling system.

使用有限元分析软件ANSYS分析了对称截面和不对称截面两种型材在定型模内冷却的过程，并采用分析得出的数据指导定型模冷却系统的设计。

Oxygen ion beam of 6.0 MeV was selected as incident ion, and the ERD spectra were detected at the angle of 30°, then the cross-sections for O to D and T are Rutherford cross section under this experiment condition.

以6.0 MeV O粒子作为入射粒子，在30°方向上探测反冲粒子，在此实验条件下，O粒子对D、T的碰撞截面为卢瑟福截面。

In this program, the declining segment of the stress-strain relation of the concrete, the restriction effect of hooped reinforcement and the bond-slip problem of the reinforcement are considered, as the same time the optimized arithmetic is applied to accelerate calculation procedure. Though the appropriate experiment arrangement, the influential factor such as the strength of concrete, the ratio of hooped reinforcement, the ratio of axial compression and the loading angle are researched, some available rules of carrying ability and ductility of the special-shaped column can be attained.

程序中考虑了混凝土应力应变曲线的下降段及箍筋对混凝土的约束影响，采用了合适的算法加速计算过程并考虑了纵筋锚固滑移的影响，通过正交试验分析了混凝土强度、体积配箍率、轴压比和荷载角对异形柱截面抗弯承载能力及截面曲率延性比的影响。

C arbitrarily inequiaxial special-shaped columns subjected to biaxially eccentric loading is made, the failure character is clarified under different axial compression ratio, the strain distribution in the section under yielding state and limit state is presented, and the corresponding M -φ curves are drew.

接着又对不等肢异形柱在其最不利荷载方向上进行了双向压弯过程破坏机理分析，揭示了不等肢异形柱构件在不同轴压比下的破坏特征，并给出了截面达到屈服状态和极限状态时截面内钢筋和混凝土的应变分布，同时绘制了相应的M-φ关系曲线。

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