nonperiodic inspection
... 检验inspection 不定期检验nonperiodic inspection 抽样检验sampling inspection ...
inspection
... Inspection equipment 检验设备 inspection 不定期检验 inspection 检查 ...
casual inspection
... 铸造性试验 castability test 不定期检验;临时检验 casual inspection 不定期检验;临时检验 casual inspection ...