Бага мөлхөгч галд тэсвэртэй тоосго гэж юу вэ??
Al2O3-SiO2 has good creep resistance, which is determined by the microstructure of the material (өөрөөр хэлбэл. the relative content of crystalline and glass phases in the material, the distribution state between crystalline phases, and between crystalline … Цааш унших