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Ar is the basis of a typical system for relationship rocks. The standard K-Ar dating approach is dependent upon the belief which the rocks contained no argon at the time of formation and that all the next radiogenic argon (fortyMáy bay phun thuốc DJI Máy bay phun thuốc XAG Máy bay phun thuốc TopXGun Linh kiện - Phụ kiện Kiến thức