threshold limit value | time weighted average
| Time Weighted Average abbr. | |
| health. | aikapainotettu keskiarvopitoisuus |
| Time-Weighted Average abbr. | |
| industr. construct. chem. | ajallisesti painotettu keskimääräinen raja-arvo; ajallinen keskiraja-arvo |
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| TLW | |||
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threshold limit value : 4 phrases in 2 subjects |
| Earth sciences | 2 |
| Health care | 2 |