991 resultados para 1995_01210410 TM-38 4301706
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"April 1989"--Pt. 2.
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"August 1982"--Vol. 1.
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"June 1975."
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"31 December 1990."
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"December 1991."
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采用高温固相反应法,LiF/MgF2/AlF3=120/110/100,烧结温度为1008K,烧结时间为4h,在流动的高纯Ar中合成了LiMgAlF6:Tm3+。对其结构和发光特性进行了研究。
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Trajectory Mapping "TM'' is a new scaling technique designed to recover the parameterizations, axes, and paths used to traverse a feature space. Unlike Multidimensional Scaling (MDS), there is no assumption that the space is homogenous or metric. Although some metric ordering information is obtained with TM, the main output is the feature parameterizations that partition the given domain of object samples into different categories. Following an introductory example, the technique is further illustrated using first a set of colors and then a collection of textures taken from Brodatz (1966).