Engineering ideas and innovations. Technical drawing. Technological background . Vector illustration .
Schlüsselwörter
drawing,
technical,
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mechanical,
technology,
gear,
construction,
mechanic,
background,
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design,
line,
vignetting,
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pattern,
scale,
detail,
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futuristic,
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science,
system,
techno,
training,
invention,
patent
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