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991.
This paper presents a detailed study of Eurotra Machine Translation engines, namely the mainstream Eurotra software known as the E-Framework, and two unofficial spin-offs – the C,A,T and Relaxed Compositionality translator notations – with regard to how these systems handle hard cases, and in particular their ability to handle combinations of such problems. In the C,A,T translator notation, some cases of complex transfer are wild, meaning roughly that they interact badly when presented with other complex cases in the same sentence. The effect of this is that each combination of a wild case and another complex case needs ad hoc treatment. The E-Framework is the same as the C,A,T notation in this respect. In general, the E-Framework is equivalent to the C,A,T notation for the task of transfer. The Relaxed Compositionality translator notation is able to handle each wild case (bar one exception) with a single rule even where it appears in the same sentence as other complex cases. 相似文献
992.
SY stem for M icrowave PL asma E xperiments (SYMPLE) is an experimental system to investigate the physics of linear and nonlinear interaction of high‐power microwave (HPM) with plasma in the Institute for Plasma Research (IPR), Gandhinagar, India. The objective of this paper was to present the designing and development of coaxial TEM to TM01 mode launcher in the circular waveguide for microwave plasma interaction experiments at SYMPLE. TEM mode was converted into TM01 mode by using aluminum made circular Pagoda‐shaped geometry. TM01 mode launcher was hence successfully designed and developed. 3D full‐wave electromagnetic solver was used to analyze and optimize the outcomes. The proposed configuration of mode launcher achieved the bandwidth of 658 MHz for S11 < ?10 dB. The maximum value of achieved return loss was ~40 dB while insertion loss was ~0 dB at 3 GHz, which verified the ~100% transmission of power without any reflections. Mode purity was also verified by field distribution in the circular waveguide. 相似文献
993.
994.
Jock Asanja Alexander Abdulsalam Surajudeen El-Nafaty Usman Aliyu Aroke Umar Omeiza 《Particulate Science and Technology》2019,37(5):534-545
The growth of science and technology over the world has led to the establishment of various industries which has helped the industrial, technological, and agricultural development of many nations. Environmental pollution from a variety of toxic derivatives, particularly heavy metals and minerals, aromatic molecules and dyes in wastewater posed a great danger to human, plants, and aquatic creatures. Adsorption appears to be the most widely used method among other techniques for the removal of toxic compounds from wastewater. The use of different adsorbents for heavy metal removal has become a subject of great interest, and there have been continuous efforts to develop new, low-cost, and efficient adsorbent materials. Bentonite, in natural and modified forms, has been applied in the removal of different water contaminants. This paper provides a review on recent progress of surface modifications of bentonite and their applications in the removal of organic and inorganic water pollutants. A comparison on the physicochemical characteristics and removal performance was presented. The adsorption mechanisms in relation to the bentonite properties were briefly discussed to offer readers some insight on the usefulness of this clay mineral in wastewater treatment. The challenges encountered and remarks on future prospects were highlighted. 相似文献
995.
针对常规的自动化快速定量装车站操作人员在装车时存在视觉盲区的问题,设计了一种基于nRF24L01和STM32的定量装车站无线控制系统。该系统通过无线手持控制终端将控制指令发送到装车站接收端,实现了对装车站装载情况的控制。试验结果表明,在有遮挡物的情况下,定量装车站无线控制系统可以实现20m范围内数据的有效传输,从而可对装车站的装载情况进行实时控制。 相似文献
996.
997.
Isolation and identification of cotton synomones mediating searching behavior by parasitoidCampoletis sonorensis 总被引:1,自引:0,他引:1
In laboratory bioassays, the parasitoidCampoletis sonorensis was attracted to the following sesquiterpenes isolated from cotton essential oil: -humulene, -bisabolene, -caryophyllene oxide, spathulenol, -bisabolol, and a new, naturally occurring bisabolene-related alcohol, (2-p-tolyl-6-methylhept-5-en-2-ol) which we name gossonorol. This is the first report of spathulenol in cotton. -Caryophyllene, a major component of cotton, was not attractive to the parasitoids. The response of the parasitoids to these compounds and the possibility of augmenting parasitoid activity in the field by manipulating plant secondary metabolites is discussed.Synomone: A chemical produced or acquired by an organism that benefits both the emitting and receiving organisms (Nordlund and Lewis, 1976). 相似文献
998.
999.
《Ceramics International》2022,48(22):33485-33498
Additive manufacturing has received tremendous attention in the manufacturing and materials industry in the past three decades. Zirconia-based advanced ceramics have been the subject of substantial interest related to structural and functional ceramics. NanoParticle Jetting (NPJ), a novel material jetting process for selectively depositing nanoparticles, is capable of fabricating dense zirconia components with a highlydetailed surface, precisely controllable shrinkage, and remarkable mechanical properties. The use of NPJ greatly improves the 3D printing process and increases the printing accuracy. An investigation into the performance of NPJ-printed ceramic components evaluated the physical and mechanical properties and microstructure. The experimental results suggested that the NPJ-fabricated ZrO2 cuboids exhibited a high relative density of 99.5%, a glossy surface with minimum roughness of 0.33 μm, a general linear shrinkage factor of 17.47%, acceptable hardness of 12.43 ± 0.09 GPa, outstanding fracture toughness of 7.52 ± 0.34 MPa m1/2, comparable flexural strength of 699 ± 104 MPa, dense grain distribution of the microstructure, and representative features of the fracture. Subsequently, the exclusive printing scheme that achieved these favorable properties was analyzed. The innovative NanoParticle Jetting? system was shown to have significant potential for additive manufacturing. 相似文献
1000.
在磁性膨润土(MBent)表面接枝聚乙烯亚胺(PEI)制备了聚乙烯亚胺改性磁性膨润土(PEI/KH560/MBent),采用FTIR、VSM、XRD、TGA、EA、SEM和EDS对其进行了表征,考察了其对水溶液中Pb2+和Cu2+的吸附性能。结果表明,聚乙烯亚胺已成功接枝于磁性膨润土表面,并有效提高其对Pb2+和Cu2+吸附量;溶液初始pH对吸附量影响较大,随着pH的增大,吸附量增加。在pH=5,溶液初始质量浓度为300 mg/L,PEI/KH560/MBent对Pb2+和Cu2+吸附量分别为96.21和61.08 mg/g;吸附过程符合准二级动力学模型,吸附行为符合Langmuir吸附等温模型。热力学研究表明,吸附为自发吸热过程。经过5次循环利用后,其吸附容量仍保持初始的60%以上,表明PEI/KH560/MBent具有一定的重复利用性。 相似文献