The antibacterial effect of carrying silver B2O3-SiO2-Na2O glass material was studied by means of antibacterial ring, nephelometery,MIC value, thin film attachm
The hydration and pore structure of sulphoaluminate MDF cement were studied by X-ray diffractometer ( XRD ), scanning electron microscope (SEM) and mercury intr
The space effects of oval-shaped furrow pit slopes were analyzed by the elastic mechanics principle. The interaction of limit equilibrium slope angle, friction