| ppt |
File extension that is associated with digital documents created in Microsoft PowerPoint. If you have or are given a file with this extension on it (for example, Presentation.ppt), it is likely the document was originally created in Microsoft PowerPoint.
출처: media.ucsc.edu/glossary.html
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| ppt |
This works like parts per million and parts per billion except that we multiply by one trillion (10 12 ). There are few, if any, solutes which are harmful at concentrations as low as 1 ppt. Note: "ppt" is sometimes used as laboratory shorthand for precipitate, which is entirely unrelated.
출처: www.ilpi.com/msds/ref/concentration.html
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| ppt |
Concentration expressed as parts of a dissolved solid (salt, in our case) per thousand parts of pure water. For example, 100 ppm of NaCl means 100 parts NaCl in 1,000 parts of pure water. Abbreviated ppt.
출처: www.myronl.com/main/faqs.htm
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| ppt |
parts per thousand - a unit used to indicate salinity
출처: www.nwrc.usgs.gov/fringe/glossary.html
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| ppt |
parts per trillion, or nanograms per liter
출처: www.ccmaui.com/~h2oeng/glossary.html
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