| ppm |
Parts (of vapor or gas) per million (parts of air) by volume.
출처: web.mit.edu/environment/ehs/topic/HazCommTerms.htm...
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| ppb |
A lot size technique that uses look ahead and look back functions to consider additional periods in modifying an initial calculation based on least total cost.
출처: www.bridgefieldgroup.com/glos7.htm
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| ppm |
The abbreviation ppm stands for parts per million. It is a common unit of concentration of gases or vapour in air. For example, 1 ppm of a gas means that 1 unit of the gas is present for every 1 million units of air. One ppm is the same as 1 minute in 2 years or 1 cent in $10,000.
출처: ccinfoweb.ccohs.ca/help/msds/msdstermse.html
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| PPO |
Preferred Provider Organization.
출처: depression.about.com/library/glossary/blglossaryin...
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| ppt |
Passport Office
출처: www.psc-cfp.gc.ca/centres/definitions_and_notes_e....
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