查询词典 niobic

Er3+-doped (100-x)TeO2-xNb2O5 (x=5,10,15,20 mol%) niobic tellurite glasses were synthesized, and their density, refractive index, glass transition temperature, crystallization temperature, Vickers microhardness, absorption spectra, fluorescence spectra and the lifetimes of Er3+∶4I13/2 level were measured.

熔制了掺铒碲铌玻璃样品100-XTeO2-XNb2O5(X=5，10，15，20 mol%，测试了其密度、折射率、转变温度、析晶温度、维氏机械强度、吸收光谱、荧光光谱、荧光寿命等参量。

The experimental method and reaction conditions for synthesis of acetals and ketals on more than 40 catalysts such as solid superacids、 heteropoly acids、 con-exchange、 resins、 molecular sieves、 niobic acid、 vitamin C、 iodine、 sulfate、 chloride、 montmorillonite and etc.

综述了固体超强酸、杂多酸、固载杂多酸、脱铝超稳沸石、树脂、分子筛、铌酸、漆酚衍生物、维生素C、碘、硫酸盐、氯化物、蒙脱土等40多种催化剂催化合成缩醛的方法和反应条件。

Niobic acid; catalytic synthesis; di-2-ethylhexyl phthalate; di-n-octyl phthalate; di-2-ethylhexylmaleate; di-n-octyl maleate; cyclohexene; modification of catalyst; dynamics of esterification

工程科技I，化学，有机化学铌酸；催化合成：邻苯二甲酸二辛酷；邻苯二甲酸二异辛酯；顺丁烯二酸二辛酯：顺丁烯二酸二异辛酯：环己烯；改性；动力学

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。