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concave optical tool
meaning in Chinese
光学玻璃凹面磨具
Examples
Concave optical tool
光学玻璃凹面磨具
Related Words
concave curvature
concave gratings
concave life
concave opening
threshing concave
concave refractor
jawline concave
concave glass
concave barrel
concave flow
concave mounting bolt
concave opening
concave parabolic mirror
concave perforated plate
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