查询词典 effective cross section

Channel section steel is a kind of economic cross section steel, the products are widely used in automobile, aviation, light industry, machinery manufacture and construction areas.

槽钢是一种经济断面型材，广泛应用于汽车、航空、轻工、机械制造以及建筑等各个行业。

The visible section should be represented from contours or from the center line of the wire's cross section.

被弹簧挡住的结构一般不画，可见部分应从弹簧的外轮廓线或从弹簧簧丝断面的中心线画起。

Next, author has proved it through ten samples for experiment, and then, we get the clear and definite understanding of failure mechanism of normal section, the failure state and the work behaviors of every component (flat steel wire web, inclined steel wire, concrete coat, longitudinal bar), established the formulas of the load-bearing capacity of the normal cross-section.

本章首先对3D板的正截面抗弯承载力进行了理论分析，并通过六个试件做了试验验证，明确了3D板正截面破坏机理、破坏状态以及3D板各组成构件（钢丝平网、斜丝、混凝土面层、纵向受拉钢筋）的受力性能，建立了承重型3D板正截面承载力计算公式及适用条件。

This paper introduces the outline of inside tunnel survey,and expounds the survey control in tunneling works from aspects of the construction traverse survey,midline layout survey,midline detection and tolerance,elevation control survey,vertical section survey and cross section survey,and breakthrough survey,etc.

介绍了洞内测量纲要，从施工导线测量、中线施工放样、中线检测与限差、高程控制测量、纵断面测量和横断面测量、贯通测量等方面阐述了隧洞工程测量控制。

The cross section stress problem of variable section round bar in axial tension and compress was studied.

通过分析变截面圆杆轴向拉压时横截面上的应力问题，论证了在该类图杆横截面上存在沿径向的剪应力，导出了计算该剪应力的公式。

Some Andalusite crystals have carbonaceous inclusions, arranged so that in cross-section they form a dark cross.

某些红柱石晶体含有碳质包裹体，正是这种结构导致了她的横截面有一个黑十字。

The calculated results show that the total differential cross section is the general rule and characteristics of collision between an atom and a diatomic molecule, the phenomenon of the scattering oscillation at large angles is more evident along with increase of the incident energy for low-lying rotational excitation state-to-state differential cross sections in He-BH collision system.

计算结果表明：He-BH碰撞体系的总微分截面具有原子与双原子分子散射的一般规律和特征；随着入射能量的增加，低转动激发态-态微分截面在大角区的散射振荡现象会更加明显。

The calculated double differential cross section of the new model is compared with experimental data and previous SCDW calculations with single particle model. The calculated cross sections are larger than those given by previous calculations at backword and forward angles and smaller than those given by previous calculations near the quasi-elastic scattering angle. The agreement with experimental data is much improved.

新模型的双微分截面计算结果与实验值以及以前采用单粒子壳层模型时的计算结果进行了比较，表明CDFM模型的引入对SCDW模型的计算结果有较大的改进，使其在大角度和极小角度区域有所增大，在准弹性散射角附近有所减小，从而能更好地与实验值相符合。

"In Romanesque and Gothic architecture, a feature of the nave arcade is the compound pier, which is cross-shaped in cross section, with shaft s placed in the recesses."

在罗马式和哥德式建筑中，中央广场的拱廊就是用的墩。这种墩的横截面采用的是十字形，并在凹壁处装有杆状物。

"In Romanesque and Gothic architecture, a feature of the nave arcade is the compound pier, which is cross-shaped in cross section, with shafts placed in the recesses."

在罗马式和哥德式建筑中，中央广场的拱廊就是用的墩。这种墩的横截面采用的是十字形，并在凹壁处装有杆状物。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。