下梁

The research of the asymmetric-plan building under the earthquake is one of the difficult points in the seismic fortification field. The simulation of the RC frames designed according to the seismic code is very useful to improve the design method and reduce the earthquake calamity.

平面不规则结构在地震作用下的非线性扭转反应分析是结构抗震领域中研究的难点问题之一，采用纤维模型梁柱单元的结构空间动力非线性分析程序，结合抗震规范的设计要求，开展对不规则结构的空间地震反应分析的研究与评估，有利于提高结构的设计水平，改进抗震措施，从而减少实际扭转震害的发生。

It is possible for further researches on the behaviors and fire resistance of reinforced concrete beam with safeguard.

这为进一步深入研究火灾下带保护层钢筋混凝土梁的力学性能和耐火极限创造了条件。

Bridge weighs Catherine of analyst of group of flag of beautiful national flower, in airline ticket acting commission is reduced and below the double effect that airline ticket price takes low ceaselessly, the market share of the net that carry Cheng sustains Gao Shuiping's growth very hard.

美国花旗集团分析师凯萨琳·梁称，在机票代理佣金下调以及机票价格不断走低的双重影响下，携程网的市场份额很难支撑高水平的增长。

A theoretical analysis of local damage in a thin ductile tube hit by a flat-nosed missile laterally is developed to predict local failure due to plugging by the beam-on-foundation model. The effect of internal press was considered, and differential equations was obtained which can predict the ballistic speed of the missile which impact the tube filled with water. It can be solved by Runge-Kutta method.

采用地基梁模型对平头弹体侧向冲击钢管的冲塞型破坏模式进行了理论分析，考虑了充压情形下内压的影响，导出了钢管在冲击过程中的运动方程，可以用龙格—库塔法进行数值求解来确定弹体冲击充液压力管道的弹道极限速度。

Because of the thin thickness, the skin of gun-bay structure, the frame plane, the oil tank floor, and the plane that hold up the smoke of aircraft gun is considered as shell element.

运用Lanczos算法对炮舱结构有限元模型进行模态分析，得到炮舱结构前20阶的固有频率和振型，分析前6阶频率下炮舱整体结构以及炮梁的振动特点。

This article studies the affection of the water ratio of the forage grass to the cube formation, forage density and production ratio.

在机具一定的情况下，以乌梁素海生长的水草为压块物料，进行饲草压块成形试验，着重研究饲草的含水率对草块成形情况、草块密度、生产率的影响。

A mechanical impedence method is described to predict the natural frequences of elastic beam under the condition of dynamic supporting with the example of helicopter tail rptor.

本文以直升飞机尾桨为例，介绍了确定弹性梁在动态支承条件下固有频率的一种机械阻抗方法。

Between the top board of the support and girder, between the bottom board and frusta when the level power is three times of the design horizontal supporting capacity.

充分保证了支座上座板与梁体、下座板与墩台之间在水平力为设计水平承载力三倍时无相对位移。

Establish large deformation model of pipeline span, simulate and validate these formulas; give ideas on the set of frusta; put forward several suggestions on correlative criterions.

基于大挠度梁理论，考虑几何非线性和土壤的物理非线性建立了跨越管道的大变形分析模型；通过5种典型工况下跨越管道变形的计算机仿真分析验证了公式适用性，对跨越管道固定墩的设置问题给出了建议；提出了一些关于现行规范中跨越管强度验算的修正建议。

Under the ratios of various initial cracking relative length,height and volume of gas concrete beam,the whole curve of opening displacement s at several testing points about fracture toughness,fracture energy,and in the area of load,cracking-tip-opening-displacement,cracking tip opening displacement cracking-tip-area are researched systematically.

在本研究中对加气混凝土梁在不同初始裂纹相对长度、不同高度以及不同体积比例等情况下的断裂韧性、断裂能以及载荷—裂纹口张开位移—裂纹尖端张开位移—裂纹尖端前沿区若干测点张开位移全曲线进行了系统研究。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。