截面

By comparing their consumptions of materials and deflexions, a suggestion that better effect can be achieved by enhacing its girder height and lessening its webs thickness for long span continuous through girder is presented.

至于连续梁桥，由于其边跨对中间跨的弯矩可起卸载作用，中间支点截面有负弯矩，使梁内所受弯矩沿梁长分布比较均匀，因而有利于充分利用支点附近的梁截面和梁内的预应力筋；此外，由于其桥跨在桥墩上连续，致使变形曲线匀顺，因而对高速行车有利。

In this mode,l a grid- section model is introduced to determine the sectional tangent stiffness of reinforced concrete beam element and analyze its degeneration process, and three-node friction-sliding tendon elements are employed to analyze the friction and sliding of external tendons at deviators or sliding blocks.

引入分块截面模型确定钢筋混凝土梁单元截面的切线刚度和分析其退化过程，采用三节点摩擦滑移预应力筋单元分析体外预应力筋在转向块或滑块处的摩擦滑移效应。

It shows that the exhaust resistance at the wind blast end reduces obviously, driven by the 800mA/12V small scale draught fan, average exhausting speed reaching above 4m/s, fairly enough to satisfy the air conditioner's demand for new wind volume. Meanwhile, the conic section of the horizontal profile and the linear design of the longitudinal profile of the exhaust end inner cavity and wind shroud for each outlet greatly reduce the flowed out exhaust, effectively lowering the wind blowing feel of the air conditioner user by playing the function of air diffusion.

经过计算和实际测试表明，该装置的送风末端风口阻力明显减小，在800mA/12V小型风机驱动下，出口平均风速可达4m/s以上，足以满足空调对象的新风量要求；同时，横截面采用2次曲线型设计、纵截面采用流线型的送风末端内腔和出口均风罩使气流流出后风速迅速衰减，起到散流器的作用，有效降低了空调对象的吹风感。

The system reliability analysis method of arch-bridge is presented based on the failure model of arch rib, which is the most important failure model of arch-bridge. The control sections of arch rib in the analysis of bearing capacity reliability are determined according to the "five-spot coincidence method", which is often used in arch-bridge design with Chinese code.

针对拱式桥结构体系中的主要受力构件—拱肋进行分析，借鉴拱桥设计中的&五点重合法&确定研究截面，进而根据该截面的不利情况确定荷载布置型式。

The program can be used to track the limit load and flex point of space structure, can take structural imperfection into consideration, gets the buckling model and vibration model of three-dimension steel structure, analyzes the elastic-plastic status or stress distributing of any intersection and any point and draws the nephogram of stress distributing, the hysteretic line subjected to cyclic load and local buckling deformation.

本软件能够跟踪分析任意空间结构中各种反弯点和极限荷载、并能够考虑结构的缺陷分布影响、求解三维空间钢结构屈曲模态和振动模态。进而分析钢构件任意截面、任意点的应力分布及塑性屈服状态，绘制截面的应力分布云图及循环荷载下的滞回曲线，绘制钢构件的局部屈曲变形图。

Through flow analysis for gas flow in a Laval nozzle and a equal cross section area friction composition pipe, a method for determining a equal cross section friction pipe length and some factor have been put forward.

通过对气流在拉伐尔喷管与等截面摩擦组合管中的流动分析，提出了确定等截面摩擦管的长度方法及其考虑因素。

A set of self-consistent thermodynamic description was obtained and a number of isothermal sections and isopleths were calculated from the current description.

并根据本工作所获得的热力学描述，计算了AI一Ni一Si若干等温截面和纵温截面。

An assumed Gaussian tail is addedonto the HO distribution. The calculations for〓 of the protron-rich isotones 〓〓 and 〓 and for 〓 the neutron-rich isotopes 〓were finished by theGlauber Model along with the modified density distrution. The calculated resultsshow that d values of these nuclei along with the modified density distribution arelower than the calculated ones along with the only HO density distribution.

为减小Glauber模型计算的反应截面与实验值的差别，本论文还对Glauber模型的输入密度形式进行了修改，在原单-HO分布基础上加一个高斯分布的尾巴，并对丰质子的同中子素核〓及〓与〓靶以及〓和丰中子的C同位素核〓与〓靶的反应截面重新进行了计算，结果显示在中能区的计算值比原来单一密度分布的计算结构有明显改善。

A simple cuts method, combinedwith artificial neural network, is used to select signal. Fitted by binned maximumlikelihood method, the cross sections of single W leptonic and hadronic decaysare found to be 0.16〓±0.02 pb and 0.42± 0.12± 0.03 pb, respectively. Thetotal cross section of single W is 0.58±0.13 ±0.04 pb.

根据这些特征，我们采用简单CUTs和人工神经网络结合的方法，从大量的原始数据中挑选出单W事例，然后用最大似然函数法拟合单W轻子道和强子道的反应截面，结果分别为0.16〓士0.02pb和0.42士0.12土0.03 pb，其总截面为0.58士0.13±0.04 pb。

The intermediate frequency elbow piece formation technology basic technological process is: First welds a lateral section is the polygon many leng link shell or both sides seal many leng fan-shaped shells, after the interior flushes the full pressure medium, the serve intrinsic pressure, under the intrinsic pressure function the lateral section by the polygon gradually changes a full circle, ends in a circular link shell.

中频弯管成型技术基本工艺过程是：首先焊接一个横截面为多边形的多棱环壳或两端封闭的多棱扇形壳，内部冲满压力介质后，施以内压，在内压作用下横截面由多边形逐渐变成圆，最终成为一个圆形环壳。

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