全文获取类型
收费全文 | 162篇 |
免费 | 0篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 5篇 |
综合类 | 3篇 |
化学工业 | 2篇 |
金属工艺 | 3篇 |
机械仪表 | 3篇 |
轻工业 | 1篇 |
无线电 | 6篇 |
一般工业技术 | 9篇 |
冶金工业 | 96篇 |
自动化技术 | 35篇 |
出版年
2015年 | 1篇 |
2014年 | 2篇 |
2013年 | 27篇 |
2012年 | 1篇 |
2010年 | 3篇 |
2009年 | 5篇 |
2007年 | 2篇 |
2006年 | 1篇 |
2005年 | 2篇 |
2004年 | 2篇 |
2003年 | 5篇 |
2002年 | 3篇 |
2001年 | 5篇 |
1999年 | 8篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1965年 | 1篇 |
1964年 | 2篇 |
1963年 | 6篇 |
1962年 | 5篇 |
1961年 | 7篇 |
1960年 | 9篇 |
1959年 | 13篇 |
1958年 | 7篇 |
1957年 | 15篇 |
1956年 | 8篇 |
1955年 | 10篇 |
1954年 | 9篇 |
排序方式: 共有163条查询结果,搜索用时 15 毫秒
1.
系统地介绍了ASP技术,并对ASP以及与其相关的其他技术如CGI、ISAPI也相应地作了介绍。目的是让读者此有基本了解,用实例说明了ASP技术在登陆WEB数据库系统中实现。 相似文献
2.
Extensible Markup Language (XML) and the XML Path Language (XPath) are introduced with software examples demonstrating how one can use them to write laboratory data management programs. Topics explored include XML document creation, manipulation, and searching. Programming examples make use of the Microsoft® XML Parser library and the Visual Basic programming language. The problem of managing microplate screening data is used as an illustration. Source code for all examples can be downloaded from http://www.labprogrammer.net. 相似文献
3.
Connectivity infrastructure, hardware and software components for point-of-care testing (POCT) environments at medium-to-large sized hospitals with expected number of POCT instruments in the order of hundreds or thousands are described. The instruments include both network-ready and non-network-ready devices. The latter are connected to the network by means of a hardware-based Instrument Network Adapter. Instrument messages are converted to standardized form and, depending on message content, are routed and delivered to appropriate destinations by a software-based Message Routing System consisting of a Message Router and a Delivery Agent. Target information systems consist of departmental and central information systems. 相似文献
4.
介绍了电力地理信息系统GIS特点及功能,探讨了GIS数据模型不仅要表达和处理空间实体(Soatial Entity)及其相互之间的关系,而且还要考虑计算机存储和处理的能力,分析了各数据模型的区别.给出了对象一关系数据模型为最优的理由. 相似文献
5.
《钢铁冶炼》2013,40(1):5-9
AbstractBlast furnace operators mostly depend on the measurements taken from the inputs and outputs in the control of the process to interpret the information available for vertical and radial distribution of variables, such as, heat load on the boundary and the distribution of the gas across the section of the furnace. Gas distribution inside the furnace is largely dependent on the distribution of the burden inside the furnace and its estimation is a challenge to the blast furnace operators. However, the measurement from the above burden probes gives some insight to the radial gas distribution in the shaft. Design of methods for automatic classification of above burden probe (ABP) profile is thus warranted. The self-organising map (SOM) is an excellent tool in the exploratory phase of data mining. It projects input space on prototypes of a low dimensional regular grid that can be effectively utilised to visualise and explore properties of the data. When the number of SOM units is large, to facilitate quantitative analysis of the map and the data, similar units need to be grouped, i.e. clustered. In the present investigation, a model for classification, visualisation and interpretation of ABP profiles has been developed by two stage procedure, i.e. SOM followed by k-means clustering. This classifier has the potential to be a useful tool for operator guidance in daily practice. 相似文献
6.
J.W. Stammers 《成像科学杂志》2013,61(6):351-354
The method and techniques employed in the investigation of the pore structure of graphites by serial sectioning combined with kinemicrography are discussed. Some of the simpler problems associated with the working of graphite somples to a good finish and yet with reasonable speed are also reviewed. 相似文献
7.
《钢铁冶炼》2013,40(3):187-194
AbstractControlling the annealing cycle in a hot dip galvanising line (HDGL) is vital if each coil treated is to be properly galvanised and the steel is to have the right properties. Current HDGL furnace control models usually take into account the dimensions of the coil to be dipped and, in some cases, the type of steel. This paper presents a new model for monitoring furnace temperature settings, which considers not just the coil dimensions but also the chemical composition of the steel. This enables the model to be adjusted more suitably to each type of steel to be dipped, so that the HDGL annealing cycle is optimised and rendered more efficient in dealing with new products. The ultimate aim is to find a model that is equally efficient for new types of steel coil that have not been processed before and whose dimensions and chemical compositions are different from coils processed previously. To find the best model, this paper compares various new and classical algorithms for developing a precise and efficient prediction model capable of determining the three temperature settings for heating on an HDGL located in Avilés (Spain) on the basis of the physical and chemical characteristics of the coils to be processed and the preset process conditions. 相似文献
8.
9.
The influence of PVP as well as the influence of the excess of silver ions, and the quantity of silver iodide in the crystal phase, on the physical ripening of Lipmann’s emulsions are investigated. It is established that PYP favours the formation of ultrafine emulsions. Its inhibitory influence on physical ripening makes it possible to regulate and equalize the activity of the gelatins, used in the synthesis of Lipmann’s emulsions.Emulsions with a resolving power of 3200 1/mm satisfactory sensitivity and edge sharpness are synthesized. 相似文献
10.
G. R. Wray 《纺织学会志》2013,104(7):284-290
Eight methods of determining the coefficient of variation of yarns or slivers when only a limited amount of material is available are discussed. The basic method involves direct measurement and calculation, and each of the other methods is compared with this one, which tends to be somewhat lengthy, for a range of man-made-fibre yams spun on the cotton system. A method based on the use of the cumulative-frequency distribution is shown to be quite the most accurate of the seven methods investigated and has the merit that it can be performed comparatively rapidly. 相似文献