1) progressive collapse
连续坍塌
1.
New issues in the progressive collapse mitigation of structures;
结构连续坍塌防控的几点新思路
2) progressive collapse
连续倒塌
1.
Dynamic effect analysis of progressive collapse of multi-story steel frames;
多层钢框架连续倒塌动力效应分析
2.
Design method to resist progressive collapse for a three story RC frame;
3层RC框架的抗连续倒塌设计
3.
Prevention of progressive collapse for frame structure in abnormal incidents;
偶然事件下框架结构抗连续倒塌分析
3) collapse
[英][kə'læps] [美][kə'læps]
坍塌
1.
The synthetic control of large scale collapse of preparatory workings after submergence in Chengchao Iron Mine;
程潮铁矿淹井后采准巷道大面积坍塌的综合治理
2.
Collapsed Deposition of Accelerated C 60 Beam on Solid Surfaces(Ⅲ) ab initio Calculation of Quantum Chemistry;
C_(60)离子撞击固体表面的坍塌和沉积(Ⅲ)——量子化学从头算研究
3.
Treatment on collapse of water conveyance tunnel of Maliba Reservoir in Yunnan Province;
云南麻栗坝水库输水隧洞坍塌处理
4) sloughing
[英][slʌf] [美][slʌf]
坍塌
1.
1 mm) of 3000~5300 m in which major hole stability problems faced is as follows: The hard brittle mudstones in the upper formation of Jura-Triassic and Carboniferous and the basalts in Permian is prone to strip and drop when drilling and sloughing and severe hole enlargement frequently occurred.
在这一井段面临的井眼稳定问题主要是:①侏罗系—三叠系、石炭系上部硬脆性泥岩及二叠系玄武岩地层易剥落和掉块、坍塌,扩径严重;②需要解决裸眼段多个地层压力系统共存和地层岩性差异较大的漏失问题,目前承压堵漏工艺技术还不过关;③巨厚盐膏层的塑性变形极易导致发生缩径卡钻,由于含盐膏泥页岩中的盐溶解及泥页岩的水化分散作用易造成井壁的不稳定性。
5) slump
[英][slʌmp] [美][slʌmp]
坍塌
1.
Through a series of investigations,the most important reasons that lead to soil ruins,which had been damaged in north-west arid area of our country,are natural causes and human elements,and the instruction slump is the major represent form.
自然因素、人为因素等是我国西北干旱地区土遗址破坏的主要因素,结构坍塌是土遗址破坏的重要表现形式。
2.
The dike slope slumping with high frequency and on large scale is a new and important problem in river closure by end dumping with deep water and low velocity.
根据截流戗堤边坡的两种不同坍塌现象的特点 ,进行定性分析并总结其主要影响因素 ,包括抛投材料的抗冲能力、戗堤基础的抗冲能力、龙口水深、抛投材料的力学性质和抛投材料的浸水湿化。
3.
This paper researches the reasons of TGP s banquette slumping during river closure by the Catastrophe theory and Self organized criticality.
从突变理论及自组织临界性理论,对三峡大江截流戗堤坍塌机理进行研究。
6) collapse
[英][kə'læps] [美][kə'læps]
崩塌;坍塌
补充资料:连续和非连续孔径射电望远镜
射电望远镜因接收天体射电的天线孔径的构成方式不同,而有连续孔径和非连续孔径之分。连续孔径射电望远镜是射电望远镜的一种最简单的类型,其天线孔径为接收单元所布满,因而天线增益和分辨率全由天线孔径的实际尺寸和形状决定。这类望远镜天线孔径可以有各种形状,如通常的抛物面、球面、抛物柱面、抛物带形反射面等。某些由分立天线(如偶极子天线、裂缝波导等)组成的天线阵,当阵元间距不大于半波长时,由于电场强度方向图和连续面电流分布的场强方向图相似,也被认为是连续孔径射电望远镜。这种情况更常见于线孔径或米波、十米波段的偶极子阵。非连续孔径射电望远镜是天线结构只分布在孔径部分面积内的望远镜,通常由多个天线组成。栅式干涉仪、复合射电干涉仪、栅十字、 T形栅、圆阵、圆环以及综合孔径射电望远镜等都是。这种望远镜的分辨率由天线范围(设想的孔径)的外尺寸决定,而总的天线增益或灵敏度,则取决于全部天线单元面积的总和。图中a所示的连续孔径天线可认为由N个单元面积组成,经天线传至接收机的信号是各单元反射信号的迭加,连续孔径射电望远镜通过焦点处的馈源自动得到这种迭加。由于二单元A、B信号的迭加效果等效于处在A、B的相关干涉仪输出,非连续孔径射电望远镜正是基于这个原理,在省去孔径一部分的情况下,保留连续孔径各单元间的全部间距和取向,如图中b所示的"骨架式"射电望远镜,或者依观测需要对这些间距和取向进行有限的采样(各种干涉阵),甚至用不少于2的有限天线依次采样后进行处理;图中c是综合孔径望远镜。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条