1) дефект, недостаток
2) неполнота; несовершенство
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- chemical imperfection
- crystalline imperfection
- crystal imperfection
- electronic imperfection
- hairline imperfection
- interstitial imperfection
- lattice imperfection
- line imperfection
- physical imperfection
- planar imperfection
- point imperfection
- primary imperfection
- structural imperfection
- substitution imperfection
- surface imperfection