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101.
为了圈定找矿靶区,文章对乐红铅锌矿床地质特征及成因进行了剖析,厘定出构造、地层、岩相、岩性等主要控矿因素;并提取了白牛厂矿区内有利的地质、物化探成矿信息,建立了乐红矿区外围(白牛厂地区)综合信息找矿模型。以GIS为平台,对白牛厂地区进行了综合信息成矿预测,最终圈定出2个Ⅰ级找矿靶区和3个Ⅲ级找矿靶区,并提出下一步找矿方向。  相似文献   
102.
摩擦焊接是一种优质、高效、节能和环保的固相连接技术,广泛应用于航空、航天、机械制造和石油勘探等领域。摩擦焊机是实现摩擦焊接技术的一种工业自动化设备,连续驱动摩擦焊接方法是最先试验成功的实用焊接方法,连续驱动摩擦焊机也是最经典的摩擦焊机。本文针对国内外连续驱动摩擦焊机设备的研究和应用现状,从主机、液压以及控制系统3个角度综述其发展概况,并在此基础上预测了连续驱动摩擦焊机的发展趋势和方向。  相似文献   
103.
HCM2S钢材在我国锅炉上的运用前景分析   总被引:3,自引:0,他引:3  
潘乾刚 《电焊机》2004,34(5):6-11
比较分析了12Cr1MoV,SA213-T22,HCM2S,钢102和SA213-T91/SA335-P91材料的各项性能指标及其工艺性,焊接性,进一步分析了HCM2S材料在我国锅炉产品上使用的可能性和运用前景。  相似文献   
104.
扩散焊接及其在石油工业中的应用前景   总被引:1,自引:0,他引:1  
周鹤法  徐小兵 《石油机械》1996,24(12):52-55
简述了扩散焊接的发展及应用,扩散焊接的基本原理、特点、主要工艺参数及扩散焊接设备的基本组成,论述了我国石油工业科研、生产领域中存在的一些焊接难题,笔者根据多年对材料扩散焊接的研究,认为扩散焊接在石油工业中有广泛的应用前景。  相似文献   
105.
为了剖析和预测查干诺尔盆地铀成矿的有利地带,运用放射性水文地质研究方法,通过对所采集的53个上升泉地下水化学样品进行铀与硒、钼、铼和钒等元素含量的测定,系统地分析了铀及其伴生元素的含量特征.结果表明,查干诺尔盆地西部地下水中铀与硒、钼、铼和钒含量等值线呈NE向展布,并从NW向SE方向铀含量具有由低到高、再由高到低的变化趋势.通过综合分析地下水样测试数据及其在外生后成砂岩型铀成矿作用方面的成因联系,结合区域地质和水文地质等成矿条件,认为盆地西部构造斜坡区具有良好的铀成矿前景,并圈定出5片成矿远景区:古宁浑迪、冲果勒浑迪、哈沙廷呼都格、安达特浑迪和那尔图远景区.  相似文献   
106.
[Correction Notice: An erratum for this article was reported in Vol 24(3) of Psychology of Addictive Behaviors (see record 2010-19026-008). The table headings in Table 5, p. 561 should have read “Time 2 alcohol related problems” and “Time 2 heavy episodic drinking”.] Trait disinhibition is associated with problem drinking and alcohol drinking can bring about a state of disinhibition. It is unclear however, if expectancies of alcohol-induced disinhibition are unique predictors of problem drinking. Impaired control (i.e., difficulty in limiting alcohol consumption) may be related to disinhibition expectancies in that both involve issues of control related to alcohol use. Data from a prospective survey of undergraduates assessed during freshman (N = 337) and senior year (N = 201) were analyzed to determine whether subscales of the Drinking-Induced Disinhibition Scale (Leeman, Toll, & Volpicelli, 2007) and the Impaired Control Scale (Heather et al., 1993) predicted unique variance in heavy episodic drinking and alcohol-related problems. In Time 1 cross-sectional models, Dysphoric disinhibition expectancies predicted alcohol-related problems and impaired control predicted both alcohol-related problems and heavy episodic drinking. In prospective models, Time 1 impaired control predicted Time 2 alcohol-related problems and Time 1 Euphoric/social Disinhibition expectancies predicted Time 2 heavy episodic drinking. These findings suggest that expectancies of alcohol-induced disinhibition and impaired control predict unique variance in problem drinking cross-sectionally and prospectively, and that these phenomena should be targeted in early intervention efforts. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
107.
Prospective studies of intergenerational continuity in parenting quality remain scarce, with little attention given to the potential role of social competence as a mediator of continuity. This study examined social competence as a mediator in the pathway from 1st generation (G1) to 2nd generation (G2) parenting quality. A normative sample of children and their parents were assessed in childhood, and again 10 and 20 years later. Parenting quality of G1 parents was assessed at each time point with multiple informants, as was G2 social competence. G2 parenting was assessed at the 20-year follow-up for those who were parents. The mediational role of social competence in G1 to G2 parenting quality was tested via nested path analytic models, accounting for continuity and cross-domain relations. Social competence mediated the intergenerational relation of parenting quality; results were invariant across gender and ethnic minority status and were unchanged after controlling for age, IQ, socioeconomic status, rule-abiding conduct, and personality (i.e., constraint). The authors discuss results regarding developmental theories of close relationships and the potential for cascading benefits within and across generations from interventions to improve G1 parenting or G2 social competence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
108.
In everyday life, one can link anticipated specific cues (e.g. visiting a restaurant) with desired actions (e.g., ordering a healthy meal). Alternatively, intentions such as “I intend to eat more healthily” present the option to act when one encounters the same cue. In the first case, a specific cue triggers a specific action; in the second, one must act in a more self-initiated manner. The authors compared such scenarios using functional magnetic resonance imaging. Participants were either instructed to respond in a particular manner to target events (cued condition) or told that they would score points for such responses, without being told that they were necessary (self-initiated condition). Although conditions differed only in the wording of instructions, the self-initiated condition was associated with poorer performance and greater activity in a predominantly frontoparietal network. Responses to targets in the self-initiated and cued conditions yielded greater activity in lateral and medial Brodmann area 10, respectively. The authors suggest that these results reflect differing demands for self-initiated versus externally cued behavior following different types of instruction, in line with the distinction between goal intentions and implementation intentions proposed by P. M. Gollwitzer and colleagues. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
109.
Problematic alcohol involvement typically peaks in the early 20s and declines with age. This maturing out of alcohol involvement is usually attributed to individuals attaining adult statuses incompatible with heavy drinking. Nevertheless, little is known about how changes in problematic alcohol use during emerging/early adulthood relate to changes in etiologically relevant personality traits that also change during this period. This study examined the relation between changes in problematic alcohol involvement and personality (measures of impulsivity, neuroticism, and extraversion) from ages 18 to 35 in a cohort of college students (N = 489) at varying risk for alcohol use disorders. Latent growth models indicated that both normative and individual changes in alcohol involvement occur between ages 18 and 35 and that these changes are associated with changes in neuroticism and impulsivity. Moreover, marital and parental role statuses did not appear to be third-variable explanations of the associated changes in alcohol involvement and personality. Findings suggest that personality change may be an important mechanism in the maturing-out effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
110.
笔者对研究区1:20万重力、航磁和化探的系统资料进行处理,据新信息重新认识,判别深部地质构造。局部地区据钻探验证,从而为以下奠定了基础。1.推断基底断裂8条,盖层断裂15条。基底断裂F1、F2、F3基本控制了本区的构造格架;2.圈定嘉鱼、山坡-贺胜、赤壁、桐梓岭、青峰(青石桥)等9个隐伏岩体。并对产出形态作了初步研究。3重磁资料新圈定的构造结合化探和地质成果预测铁、铜、金成矿远景区4处,油气成矿远景区3处。  相似文献   
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