1. Ukwethulwa okujwayelekile kwensimbi yokusika mahhala Insimbi yokusika yamahhala, iphinde ibhekisele njengensimbi yomshini wamahhala, iyinsimbi ye-alloy ngokufaka izakhi zokusika zamahhala ezifana nesulfure, phosphorus, lead, calcium, selenium kanye ne-tellurium ngcono impahla yayo yokusika.Insimbi yokusika yamahhala i...
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