Based on Hamilton principle,the governing differential equations and the corresponding boundary conditions of steel-concrete composite box girder with considera
Existed evidences show that airborne transmission of human respiratory droplets may be related with the spread of some infectious disease,such as severe acute r
The influences of BaCu(B2O5)(BCB) addition on sintering,microstructure and microwave dielectric properties of Li2MgTi3O8 ceramics were investigated using X-ray