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- By means of positron annihilation lifetime spectra (PALS), the free volume of polymer could be tested. 通过正电子湮没寿命谱技术(PALS)探测聚合物的自由体积特性,能够了解聚合物的微观性质。
- We have measured the Positron lifetime spectra of La_ 2-x M_xCuO_4(LMCO,MSr,Ba,x0.05,0.10,0.125,0.15,0.2) in the room temperature and studied the relationship between the superconductivity and the mechanism of positron annihilation. 我们测量了La2-xMxCuO4(LMCO;M=Sr;Ba;x=0.;05;0
- The positron lifetime spectra have been measured as a function of exposed air pressure for synthetic zeolite 13X and 3A,and as a function of calcination temperature for zeolite 10X. 测量了3A型及13X型沸石分子筛在不同压强空气中的正电子寿命谱,并测量了10X型分子筛在不同温度下焙烧后的寿命谱。
- Positron annihilation lifetime spectra (PALS) 正电子湮没寿命谱(PALS)
- Positron lifetime spectra parameters 正电子寿命谱参数
- Positron Annihilation Lifetime Spectra Used in Polymer Materials 应用于聚合物中的正电子湮没寿命谱技术
- A study of YBa_2Cu_(3-x)Sn_xO_y by positron lifetime spectrum YBa_2Cu_(3-x)Sn_xO_y超导体系的正电子寿命谱研究
- Positron annihilation lifetime spectra used in rubber-plastics blending system 正电子湮没技术在橡塑共混体系中的应用
- Keywords MgAl_2O_4 transparent ceramics;positon lifetime spectra;defects; 透明陶瓷;正电子寿命谱;缺陷;
- Keywords Positron lifetime spectra;USY zeolite;Secondary pores;Quenching; 正电子寿命谱;脱铝Y型沸石;二次孔;猝灭;
- Study of irradiation induced grafting of fluoride polymerby positron lifetime spectra 辐照接枝氟塑料的正电子寿命谱研究
- It's a once in a lifetime chance. 这是一生难得的机会。
- She devoted her lifetime to the study of zoology. 她以毕生精力从事动物学研究。
- He met with many a setback in his lifetime. 他一生中遭到过许多挫折。
- The automatic data acquisition and processing for positron annihilation lifetime spectra and Doppler broadening spectra 正电子湮没寿命谱和多普勒展宽谱的自动获取和处理技术
- Keywords Positron annihilation lifetime spectra;Free\|volume;Positronium;Data processing;Application;Review; 关键词正电子湮没寿命谱技术;自由体积;正电子素;数据处理;应用;综述;
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- A lifetime guarantee; lifetime membership. 终身保障; 终身会员资格
- He is a legend in his lifetime for his scientific discoveries. 他的科学发现使他一生成为传奇人物。
- The eating habits of a lifetime are not easily given up. 一生中长期形成的饮食习惯是不容易改掉的。