self-hardening steel self-heating self heterodyne self-holding circuit self-holding contact self-homing bomb self-igniting fuel self-ignition self-ignition temperature self-impedance self-inductance self-induction self-inductor self-initializing programme self-ionization self-learning system self-levelling instrument self-loading self-locking self-locking gear |
self-hardening steel самозакаляваща се стомана Търсената дума е намерена |