.mil stands for military. It Is The Highly trusted domain.
The prf means the coin is a proof, proof coins are not intended for circulation and have mirror like fields (spaces where there is no design) and generally frosty designs. US coins are graded on a scale from 1-70 with 1 being barely readable and 70 being absolute perfection. Prf 65 is a fairly low grade for a US proof made recently. For older coins Prf 65-66 are typical due to damage from improper storage. But for newer proofs, prf 68 is low and 69 and 70s are common.
1. PRF is based on population data as a whole, SRF is based on Sample data 2. We can draw only one PRF line from a given population. But we can Draw one SRF for one sample from that population. 3. PRF may exist only in our conception and imagination. 4. PRF curve or line is the locus of the conditional mean/ expectation of the independent variable Y for the fixed variable X in a sample data. SRF shows the estimated relation between dependent variable Y and explanatory variable X in a sample.
1 mil = 0.0254 millimeters4 mil = 0.1016 millimeters
1,570,000 Unless you are using mil to mean "millimetre" then 1.57 mil = 1.57 mm = 0.00157 m Or you are using mil to mean "millilitre" then 1.57 mil = 1.57 ml = 0.00157 l. Or you are using mil to mean "thousandths of an inch" then 1.57 mil = 0.00157 inch.
It is the Military Preference 23699. Just a type of turbine engine oil. What the actual numbers mean I am not sure. Just numbers I believe. as all types of Oils and preservatives in the military carry a MIL spec but can be made by different manufactures but have to meet that specific standard.
Performance, If it's mil-dtl, it's detail
The density of oil MIL-L-23699 is typically around 0.945 - 0.955 g/cm³ at 15.6°C.
The bulk modulus of oil can vary based on factors such as temperature and pressure. However, for oil meeting the MIL-L-23699 specification, the typical bulk modulus is around 1.8-2.0 GPa.
It is the Military Preference 23699. Just a type of turbine engine oil. What the actual numbers mean I am not sure. Just numbers I believe. as all types of Oils and preservatives in the military carry a MIL spec but can be made by different manufactures but have to meet that specific standard.
Military Performance Specification 81733 Revision D
Could be Pulse Repetition FrequencyActually it is a bit more mundane, it is PReFerred, as in the Preferred number. It replaces an entire list of previous prefix's to military numbers such as C for Connector, R for Resistor, W for Wire, etc.An example:MIL-PRF-27/356C succeeds MIL-T-27/356B and is the specification for:TRANSFORMERS AND INDUCTORS (AUDIO, POWER AND HIGH-POWER PULSE), INDUCTORS, POWER, TF5S04ZZ
Answer: PRF (Personnel Readiness File/Folder) files are used in technical application and are not likely to be accessed by your average PC user. In general, PRF files are Windows system files, although they have other technical applications as well.
.mil stands for military. It Is The Highly trusted domain.
.mil stands for military top-level domain name
Pro-Seal 870 is a Corrosion Inhibitive Sealant built to meet MIL-PRF-81733D Classification. It is a is a two-part, manganese dioxide cured polysulfide compound. It's also known as BMS 5-95
The prf means the coin is a proof, proof coins are not intended for circulation and have mirror like fields (spaces where there is no design) and generally frosty designs. US coins are graded on a scale from 1-70 with 1 being barely readable and 70 being absolute perfection. Prf 65 is a fairly low grade for a US proof made recently. For older coins Prf 65-66 are typical due to damage from improper storage. But for newer proofs, prf 68 is low and 69 and 70s are common.