1) 4D CAD
4DCAD
1.
4D CAD is a progress of computer technique in construction engineering management.
4D CAD技术属于计算机技术在工程施工领域应用的一项新技术,本文作者通过论述4D CAD技术的发展,分析了4DCAD技术在施工管理中的优势。
2.
Combined the object-oriented system simulation technology for complex engineering system with the CAD digital modeling technology,the system simulation of bridge construction based upon 4D CAD was presented,which linked a 3D model of a construction project with a project activity schedule element.
将面向对象的复杂工程系统仿真方法与CAD数字建模方法相结合,将桥梁的3D整体模型和施工进度相链接,提出了基于4DCAD的桥梁施工系统仿真思想,使施工过程的动态可视化与直观分析优化后的施工进度成为可能。
2) 4D-Reconstruction
4D重建
1.
Evaluation on the feasibility of MSCT 4D-Reconstruction for the diagnosis of styloid process syndrome;
MSCT4D重建在诊断茎突综合征中的优势及临床价值
3) 4D products
4D产品
1.
The method and application technology of modern city planning based on 3S technology is discussed in this article,Tai-an is taken as an example to study how to make use of the 3S technology and the 4D products to serve modern city planning in the meantime,the p.
本文探讨了基于3S技术的现代城市规划的方法及应用技术,同时以泰安市为例,研究了如何运用3S技术和制作的4D产品等基础数据为现代城市规划服务,对其效果进行了实证分析,目的是希望能够促进3S技术在现代城市规划中的应用和发展,促进"数字城市"的顺利建设。
2.
This paper focuses on how to store up 4D products such as DOM,DEM,DRG and DLG in Oracle 8i,one of large business RDBMS,by spatial database engine.
主要研究了4D产品(DEM、DOM、DRG、DLG)空间数据库结构设计,将4D产品通过空间数据库引擎ArcSDE存储在大型商业关系数据库管理系统Oracle8i中。
4) 4D data
4D数据
5) DF 4D
东风4D型
1.
In this paper the body design for DF 4D diesel shunting locomotives was introduced briefly, and body fiqure, underframe, cab and clectric apparatus cabinet of the locomotive were presented in detail.
简要地介绍了东风4D型调车机车车体设计情况 ,详细阐述了车体外形设计、底架的设计和计算以及司机室、电气室的设计。
6) DF4D
DF_(4D)型
补充资料:2,4-DCAD
分子式:C7H4Cl2O
分子量:175.01
CAS号:874-42-0
性质:熔点69-73°C。沸点233°C。闪点135°C。水溶性<0.1 g/100 mL at 24°C。
分子量:175.01
CAS号:874-42-0
性质:熔点69-73°C。沸点233°C。闪点135°C。水溶性<0.1 g/100 mL at 24°C。
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