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Төмрийн Хүдэрийн Үйлдвэрлэлийн Хөгжлийн …
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Төмрийн хүдэр, түүний үйлдвэрлэл, хэрэглээ
https://mn.birmiss/төмрийн-хүдэр-түүний-үйлдвэрлэлWebтөмрийн хүдрийн гол зүйл магнетит юм. Энэ нь 70% орчим азотын дутуу исэл, төмөр агуулдаг. Энэ хүдэр хар, ган саарал өнгөтэй байна. Соронзон төмрийн хүдрийн …
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