Banyere mpaghara ngwa nke ebumnuche ịgbasa, RSM engineer ga-enye okwu mmeghe dị nkenke n'isiokwu na-esonụ. A na-ejikarị ebumnuche ịgbasa ọkụ eletrik na ụlọ ọrụ ozi, dị ka sekit agbakwunyere, nchekwa ozi, ihe ngosi kristal mmiri, ebe nchekwa laser, elektrọn ...
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