элс чулуу нийлүүлэгчид swakopmund
элс чулуу нийлүүлэгчид swakopmund. ... R. J. B. R. J. B.JOHNSON has reported the discovery and measurement of an electromotive force in conductors which is related in a simple manner to the temperature of the conductor and which is attributed by him to the thermal agitation of the carriers of electricity in the conductors.