naphtolsulphonic acid napierian log nappe nappe-shaped-spillway crest narcotine narrow angle narrow-angle light fitting narrow-angle lighting fitting narrow-band narrow-band absorber narrow-band amplifier narrow-band filter narrow-band receiver narrow beam narrow-beam absorption narrow-beam antenna narrow curve narrow fabric loom narrow flame narrow fraction |
naphtolsulphonic acid хим. нафтосулфонова киселина Търсената дума е намерена |