Undoped (ND) semi-insulating (SI) liquid encapsulated Czochralski (LEC) GaAs crystals were investigated by photocurrent and temperature-dependent Hall measureme
<正> An improved wax-based binder was developed for the powder injection molding (PIM) of WC-TiC-Co cemented carbides. The critical powder loading and the rheol
The crystal and molecular structures of the K[TbⅢ(edta)(H2O)3].5H2O (edta = ethylenediaminetetraacetic acid)and K4[TbⅢ2(Httha)2]@14H2O (ttha = triethylenetetr