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1944年末,第二次世界大战战局的变化迫使希特勒寄希望于采取非常规手段来扭转不利的局面。今天,一名参加了当年特种部队的幸存者向人们讲述了当时他们是如何接受指令去“清除”盟军最高指挥官的。 相似文献
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由图书馆服务趋势谈图书馆内部设施的改良 总被引:1,自引:0,他引:1
从图书馆的视听设备、内部墙体色彩搭配、馆内的休闲区的设置、图书馆门厅的装饰及图书馆的宣传几个方面阐述了图书馆内部设施对读者的影响. 相似文献
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Novel transparent ceramics of Zr4+ doped Ba(Mg,Ta)O3(BMT)with a high refractive index of 2.037 at 587.56 nm were successfully fabricated via high temperature solid-state-reaction sintering method.To make it transparent,the pure cubic Ba(Zr,Mg,Ta)O3 phases(BZMT)were realized in advance by skillfully modulating the lattice structure of BMT from trigonal symmetric to cubic symmetric through doping Zr4+ into the lattice of BMT crystal.Highly optical transmittance of 74% at 650 n,,which hit the upper limit of the theory,was achieved for BZMT.Both abbe number of 23.4 and the bandgap Eg of 3.22 eV have been calculated. 相似文献
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