论文部分内容阅读
我国声悬浮研究取得重要进展
【出 处】
:
自然科学进展
【发表日期】
:
2002年2期
其他文献
Ordered intermetallics possess attractive high-temperature properties; however, low ductility and brittle fracture limit their use as engineering materials in m
The controlled synthesis of large-scale nanocrystalline metals and alloys with predefined architecture is in general a big challenge, and making full use of the
Semiorganic nonlinear optical crystal of L-Glutamic acid hydrochloride(LGHC) was grown from aqueous solution by slow evaporation technique. Single crystal X-ray
贵刊今年第5期商海经栏目刊载童培幸先生的《小议“斯米马三”》一文,读后感到有几句话想说,供你们参考。 童先生文中谈到,初到日本时,对于店堂里此起彼落的“斯米马三”的
Synthesis of poly(3,4-propylenedioxythiophene)/MnO2 composites and their applications in the adsorpt
The poly(3,4-propylenedioxythiophene)/MnO2 composites (PProDOT/MnO2) were prepared successfully by soaking the PProDOT powders into potassium permanganate (KMnO
Bioactivity analysis of the Ta (V) doped SiO2-CaO-Na2O-P2O5 ceramics prepared by solid state sinteri
The main objective of the study was to control the degradation rate of material at a higher degradation rate improving the chemical stability of the material. T
去年以来美国经济持续疲软,导致今年的全球经济增幅预期大为下降。美国经济走势对中国经济尤其是对外贸易和吸引外资必然有重要的影响。总体上看,美国经济对我产生影响主要表
Effect of Y2O3 content in the pack mixtures on microstructure and oxidation resistance of B-Y modifi
B–Y modified silicide coatings were prepared on Nb–Si based alloy by pack cementation at 1300 ℃ for 10 h. The effect of Y2O3 content in the pack mixtures on