|
|
|
|
|
|
|
|
|
Api engine service categories
| Oil glossary |
Gasoline and diesel engine oil quality levels established jointly by api, sae, and astm, and sometimes called sae or api/sae categories; formerly called api engine service classifications.
|
|
Established, английский
Установленный
Categories, английский
- A feature that allows the user to apply custom or default markers to items (e.g. outlook messages or onenote content) in order to categorize information for easy retrieval and sorting.
- A list of categories that developers select from to make their app more discoverable.
- A list of different types of xbox music application contents, such as games, music+video, lifestyle.
- The section of the store that shows subgroups of apps and games, grouped by intended use or function.
- Flexible and rigid. borescope, ultraviolet: borescope with the ability to transmit ultraviolet radiation to the distal end while transmitting visible light to the eyepiece.
|
Api gravity, английский
- A gravity scale established by the american petroleum institute and in general use in the petroleum industry, the unit being called "the a.p.i. degree." this unit is defined in terms of specific gravity as follows:
- Arbitrary scale expressing, in degrees api, the specific gravity of liquid petroleum products.
- Measures the density of petroleum fluids. it is derived from specific gravity and was developed to express density in whole numbers with one or two decimal places. for example, an api gravity of 25.5 is the same as a specific gravity of 0.9013. this does not compare to an h2o constant. this unit is defined in terms of specific gravity at 60°f (spg 60°f) as follows: degrees api 141.5 = spg 60° f - 131.5
Antiwear additives, английский
Improve the service life of tribological elements operating in the boundary lubrication regime. antiwear compounds (for example, zddp and tcp) start decomposing at 90 degrees to 100 degrees c and even at a lower temperature if water (25 to 50 ppm) is present.
|
|
|
|
|
|
|
