全文获取类型
收费全文 | 1179篇 |
免费 | 0篇 |
专业分类
化学工业 | 2篇 |
金属工艺 | 1篇 |
机械仪表 | 1篇 |
矿业工程 | 4篇 |
轻工业 | 1篇 |
无线电 | 1篇 |
一般工业技术 | 28篇 |
冶金工业 | 1140篇 |
自动化技术 | 1篇 |
出版年
2019年 | 1篇 |
2018年 | 1篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2014年 | 2篇 |
2013年 | 3篇 |
2012年 | 1篇 |
2010年 | 1篇 |
2007年 | 1篇 |
2006年 | 1篇 |
2005年 | 2篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2000年 | 5篇 |
1999年 | 4篇 |
1998年 | 274篇 |
1997年 | 203篇 |
1996年 | 162篇 |
1995年 | 86篇 |
1994年 | 74篇 |
1993年 | 59篇 |
1992年 | 14篇 |
1991年 | 13篇 |
1990年 | 1篇 |
1989年 | 9篇 |
1988年 | 7篇 |
1987年 | 3篇 |
1986年 | 4篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 7篇 |
1981年 | 10篇 |
1980年 | 18篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 70篇 |
1976年 | 122篇 |
1975年 | 3篇 |
1955年 | 2篇 |
排序方式: 共有1179条查询结果,搜索用时 0 毫秒
991.
AV Beregovkin AS Vodolazov VS Georgievski? VV Kalinichenko NV Korelin 《Canadian Metallurgical Quarterly》1976,10(5):24-29
Cardiorespiratory responses of Salyut-4 crewmembers to exercises of 600 kgm/min performed for 7 min on a bicycle ergometer in the supine position were studied. It was found that the 30- and 63-day flights induced a certain decrease in the body response which included a less economic functioning of the cardiorespiratory system during exercise. The degree of postflight changes of the 30- and 63-day crewmembers was similar. At the same time the cardiorespiratory system of the 63-day crewmembers returned to the preflight level more rapidly than that of the 30-day cosmonauts. 相似文献
992.
In examination of patients with thyrotoxicosis, aged from 14 to 24 years, there was revealed a reduction of the activity of the mediatory link of the sympathico-adrenal ssystem without any connection with age, the severity and duration of the disease, and also with the efficacy of drug therapy. The functional test with insulin in patients with thyrotoxicosis permitted to detect definite reserve possibilities of the adrenergic regulation intensified with increased duration of the disease and with advance of the patient's age, but not with increased severity of the disease. The insulin test offered a possibility of assessing the sympathico-adrenal system reactivity in cases of different degree of the disease compensation. 相似文献
993.
994.
JM Nedeljkovi? VM Vasi? VV Vukovi? TS Jovanovi? 《Canadian Metallurgical Quarterly》1995,13(4-5):471-475
The influence of the acidity and the Cl- concentration on the kinetics of the complex formation between s-carboxymethyl-L-cysteine and Pd(II) chloride was studied with a stopped-flow technique in the pH range from 1.5 to 5.0 at 25 degrees C. The reaction mechanism involving Pd(H2O)4-nCln, LH-, LH2 and LH3+ species was proposed. Fairly good agreement between the computed and experimentally determined rate constants was found. 相似文献
995.
996.
997.
Stimulation of ipsilateral gigantocellular reticular and lateral vestibular nuclei of medulla oblongata, pontine lateral and medial nuclei, reticular formation of the midbrain, as well as the ipsi- and contralateral sensomotor cortex induced antidromic ATs recorded intracellularly in Fastigial neurons. Conduction velocity of Fastigial cell axons projecting to various nuclei of the brainstem was 30--35 m/sec and to the cerebral cortex--43--52 m/sec. Organization of the nuclear efferent system is peculiar by the branching of some axons into various structures of the brainstem. 相似文献
998.
999.
1000.