首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1605篇
  免费   161篇
  国内免费   33篇
电工技术   85篇
综合类   197篇
化学工业   31篇
金属工艺   3篇
机械仪表   17篇
建筑科学   95篇
矿业工程   5篇
能源动力   19篇
轻工业   586篇
水利工程   3篇
石油天然气   14篇
武器工业   2篇
无线电   71篇
一般工业技术   208篇
冶金工业   182篇
原子能技术   2篇
自动化技术   279篇
  2024年   13篇
  2023年   25篇
  2022年   43篇
  2021年   67篇
  2020年   69篇
  2019年   64篇
  2018年   67篇
  2017年   85篇
  2016年   78篇
  2015年   62篇
  2014年   75篇
  2013年   94篇
  2012年   115篇
  2011年   97篇
  2010年   109篇
  2009年   114篇
  2008年   90篇
  2007年   91篇
  2006年   71篇
  2005年   64篇
  2004年   59篇
  2003年   60篇
  2002年   49篇
  2001年   23篇
  2000年   20篇
  1999年   9篇
  1998年   8篇
  1997年   12篇
  1996年   9篇
  1995年   7篇
  1994年   4篇
  1993年   7篇
  1992年   7篇
  1991年   2篇
  1989年   5篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
  1982年   2篇
  1979年   1篇
  1976年   1篇
  1972年   1篇
  1965年   1篇
  1964年   3篇
  1963年   1篇
  1962年   3篇
  1960年   3篇
  1959年   1篇
  1958年   2篇
  1955年   3篇
排序方式: 共有1799条查询结果,搜索用时 31 毫秒
1.
以电信用户入网协议为切入点,电信用户的携号转网行为应受到《合同法》《消费者权益保护法》等私法规范的保护与限制。该行为引起的格式条款解释、合同终止、违约责任、损失赔偿等问题,不能仅靠《电信条例》等公法规范来调整。应当积极引导广大消费者用户以私法领域相关规定为依据,转变争议解决思维,拓宽纠纷处理途径,合理选择维权手段,以保护自身合法民事权益,与行业监管部门共同推动电信行业有序发展。  相似文献   
2.
Few literature studies have investigated the relationships between different uses and gratifications (U&Gs) of mobile instant messaging (MIM) apps, continuation, and purchase intentions. To address this gap, the researchers aimed to examine the influence of the content, social, process, and technology U&Gs of MIM on continuation intentions toward MIMs, and purchase intentions toward virtual goods available on MIMs. A comprehensive research model was developed based on the U&G theory, which was tested using cross-sectional data from 309 Japanese MIM users. The study considered six different U&Gs of MIM as independent variables and purchase intentions towards stickers and continuation intentions towards MIM as dependent variables. The study results suggest that exposure U&G has a significant positive association with MIM sticker purchase intentions. The entertainment and affection U&G are positively associated with continuation intentions towards MIM use. The study contributes to the literature by investigating U&Gs that motivate MIM users to have both positive purchase intentions toward virtual goods, such as stickers, and continuation intentions toward MIMs. The study has significant theoretical and practical implications for both researchers and practitioners who are interested in virtual goods, the virtual economy, MIM apps, social media, new media, and the service economy.  相似文献   
3.
4.
The relative liking or disliking that beer drinkers have for characteristics generally regarded as off‐flavours by brewers, namely lightstruck and stale, has been explored in a consumer trial where products are presented branded and unbranded. Drinkers display a significant preference for fresh over lightstruck product, irrespective of branding. By contrast, drinkers seemed to be less clear about their liking or otherwise for stale character, although in this case they clearly prefer the branded product over the unbranded product when the beers are fresh and vice‐versa when the beer is aged. A stale version of a beer that consumers are familiar with fails to meet expectations for that product. Significant numbers of drinkers do declare a liking for lightstruck and aged character.  相似文献   
5.
岳飞《满江红》词在中国诗歌史上享誉千古,其豪迈壮烈的艺术张力和悲壮的魅力,震撼并感染了无数国人,铸就了一代代中华儿女的爱国情怀。作为爱国诗篇,其爱国情结与忠君理念相伴共生,今天我们对之作当代审视和解读,应突破狭隘的爱国范畴,将其升华为中华复兴的精神动力。  相似文献   
6.
S.R. Jaeger    C.M. Lund    K. Lau    F.R. Harker 《Journal of food science》2003,68(3):1108-1117
Preference mapping with 10 pears identified 3 segments among New Zealand consumers. While 1 segment preferred ripe European cultivars, another rejected only the seedling with strong off‐flavors. A 3rd segment combined the 2 former segments, but also rejected 2 hybrid samples. Survey responses to the question “To me, the ideal pear is ?” from a 2nd consumer sample confirmed the general preference for juicy and sweet pears, the key characteristics of ripeness. A separate appearance evaluation revealed 4 segments based on color and shape. Combining information from several sources resulted in suggestions for new breeding directions for pears, while highlighting the importance of appearance and the need for more extensive measurements.  相似文献   
7.
Problems associated with provision of food in quantity foodservices prompted the development and use of prepared food items processed in retortable trays. Consumer acceptance of such foods was required so that the items could be screened for foodservice application. Consumer tests, using small portion samples and sensory testing under laboratory conditions, gave a relatively reliable prediction of acceptability of most of the items under extended-use consumer testing during a field trial. Final field acceptance of some items was influenced by external factors not accounted for in laboratory testing.  相似文献   
8.
An evaluation of a consumer product is presented as an example of how ergonomics models can guide data collection and interpretation by non-ergonomists. The product, a new cooking pan, was compared with its earlier counterpart on performance and safety tests for specific features. Model-guided evaluations produced data which could be well-fitted by linear relationships, and measures derived from the data could be interpreted in physical terms by engineers. This is now the standard methodology for pan evaluation in the client company.  相似文献   
9.
This pioneering study investigates the seventy Bruneian corporate customers' adoption intentions towards using the mobile services. The study uses and validates the VAM (value-based adoption model) for investigating mobile service in different geographical setting contrary to the original study for Mobile Interact. The study combines four external variables such as perceived usefulness, perceived enjoyment, technicality and perceived fee with perceived value in predicting the adoption intentions of using mobile services. The study results indicate that only perceived usefulness is significant predictor of perceived values which are significant indicator of adoption intentions of using mobile services. Based on the results, some recommendations are made for the managerial implications.  相似文献   
10.
当今大众商品形式的多样化多是由合理多样的配色产生的,消费者的购买欲望也由此产生,这丰富着人们五颜六色的生活。色彩在从未停止过更新的电子消费产品领域中,起着个性和诉求的媒介作用。文章以iPod touch5系列便携式移动产品为案例,分析iPod touch5系列产品的色彩设计,介绍了最具代表性的新一代苹果产品在颜色设计上是如何考虑的,以及分析它是怎样利用自己的色彩魅力赢得了不可替代的消费地位,由此让大众意识到颜色是产品设计的重要组成部分。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号