security of supply was stable compared to the trend in recent years. this is a result of preventive maintenance and past investments. vattenfall continues to focus on investments in improving quality of supply in cities and the countryside, and to meet growth in metropolitan areas and prepare the power grid...
d'aluminium emmenant l'eau de la pompe, ou de borne d'irrigation, au point de branchement des conduites latérales mobiles des asperseurs. les rampes mobiles en tubes d'aluminium sont des conduites latérales permettant d'amener l'eau de la conduite principale aux asperseurs. une rampe est constituée...
built into a desk. early calculator light-emitting diode (led) display from the s ( ussr ) in october , the world's first all-electronic desktop calculator, the british bell punch /sumlock comptometer anita (a new inspiration to arithmetic/accounting) was announced. [ ] [ ] this machine used vacuum tubes...