The password keyboard as a kind of input device that is essential to bank and other financial departments,it must have high credibility,safety,and the function of keeping secret.Disorder keyboard is a developed kind o...The password keyboard as a kind of input device that is essential to bank and other financial departments,it must have high credibility,safety,and the function of keeping secret.Disorder keyboard is a developed kind on the basis of the traditional password keyboard,which increased some new functions and characteristics,for example,there is LED on the surface of the keys,and the numbers displayed on the keys are random,also a certain angle of view is restricted.Outside of a certain angle,the number LED displayed on the keyboard is impossible to be seen.Even other people can see the keys that the customer pressed,but because when the customer finished inputting the password,the key numbers will be re-arranged again,so,the customer unnecessarily worried about that other people would take his password.展开更多
In order to investigate the dependence of crystal structure on the Coulomb interaction, we have first of all to point out some important characteristics of the charge distribution in an ideal crystal lattice. In fact,...In order to investigate the dependence of crystal structure on the Coulomb interaction, we have first of all to point out some important characteristics of the charge distribution in an ideal crystal lattice. In fact, in a crystal lattice the asymmetric展开更多
With the support by the National Natural Science Foundation of China and the Ministry of Science and Technology of China,the research team led by Prof.Wang Weihua(汪卫华)at the Institute of Physics,Chinese Academy of ...With the support by the National Natural Science Foundation of China and the Ministry of Science and Technology of China,the research team led by Prof.Wang Weihua(汪卫华)at the Institute of Physics,Chinese Academy of Sciences,reported'The Memory Effect Manifested by a Boson Peak in展开更多
文摘The password keyboard as a kind of input device that is essential to bank and other financial departments,it must have high credibility,safety,and the function of keeping secret.Disorder keyboard is a developed kind on the basis of the traditional password keyboard,which increased some new functions and characteristics,for example,there is LED on the surface of the keys,and the numbers displayed on the keys are random,also a certain angle of view is restricted.Outside of a certain angle,the number LED displayed on the keyboard is impossible to be seen.Even other people can see the keys that the customer pressed,but because when the customer finished inputting the password,the key numbers will be re-arranged again,so,the customer unnecessarily worried about that other people would take his password.
文摘In order to investigate the dependence of crystal structure on the Coulomb interaction, we have first of all to point out some important characteristics of the charge distribution in an ideal crystal lattice. In fact, in a crystal lattice the asymmetric
文摘With the support by the National Natural Science Foundation of China and the Ministry of Science and Technology of China,the research team led by Prof.Wang Weihua(汪卫华)at the Institute of Physics,Chinese Academy of Sciences,reported'The Memory Effect Manifested by a Boson Peak in
