Phosphorus bronze Casting | metal gear casting | Sand casting
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- เผยแพร่เมื่อ 12 ก.พ. 2023
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#indian #metal #phosphorus #bronze #gearcasting #gear #metalcasting #bronzesandcasting #melting #amazingskill #foundry #learning #skills - วิทยาศาสตร์และเทคโนโลยี
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