Female hand use tweezer for calibrate the specific gravity precious stone for separate the type of stone with the Hydrostatic
The female hand use a tweezer to calibrate the specific gravity of precious stone to separate the type of stone with the Hydrostatic Weighing Balance
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Keywords:
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Username: Xiuxiu84
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Width: 5868 pixels
Height: 3427 pixels
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Image ID: 250932375