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engraved hand drawn in old sketch and vintage style. scientific formulas and calculations in physics and mathematics  chemistry and biology or astronomy on whiteboard. Education and Science.

engraved hand drawn in old sketch and vintage style. scientific formulas and calculations in physics and mathematics chemistry and biology or astronomy on whiteboard. Education and Science.

编号:689919184版权:Arthur Balitskiy格式:矢量图 可以任您放大或缩小尺寸也不会失去图像解像度
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EPS矢量可随意缩小且不影响画质
JPG大图5500 x 418546.57 cm x 35.43 cm (300dpi)

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