Science and Technology · Workshop Technology
मानक अपघर्षक ग्रिट (grit) वर्गीकरण में, 40 नंबर का एमरी पेपर किस श्रेणी के अंतर्गत आता है?
- 1मध्यम बारीक (Medium fine)
- 2बारीक (Fine)
- 3खुरदरा / मोटा (Coarse)✓
- 4बहुत बारीक (Very fine)
सही उत्तर देखें
खुरदरा / मोटा (Coarse)
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