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Mr_Tarrant
คำแนะนำของผู้เขียน
Seven pictures of metals and alloys in typical applications. Six pictures have drop-down answers: the seventh is free-text (extension question). All photographs (c) Jon Tarrant.
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Created by
Mr_Tarrant
คำแนะนำของผู้เขียน
Seven pictures of metals and alloys in typical applications. Six pictures have drop-down answers: the seventh is free-text (extension question). All photographs (c) Jon Tarrant.