I. Key points of correct writing forms
in the technical parameters of air compressor, Mark “The air supply is not less than 0. 2m³ @ 0.3MPa /min “, strictly follow the industrial standard writing method:the @ symbol is followed by the pressure value. The unit MPa must be uppercase without spaces (that is, 0. 3MPa); Unit volume m³ “Use superscript; Slash”/”means” every minute “, and cannot write forms other than”/min “(such as” every minute “or” min ¹ ¹ “).
II. Key details
- MPa unit Writing: in the international system of units, MPa “Is mega Pascal, M (MB) and Pa (Pa) are uppercase, and there is no space in the middle;it is forbidden to write “mpa” “Mpa” or” 0.3 M Pa “.
- Gas supply labeling logic: the working conditions must be specified-here @ 0.3MPa “Refers to the exhaust pressure 0. 3MPa free air flow (FAD) under gauge pressure, theoretical value under non-absolute pressure or unspecified pressure.
- Compressor parameter format convention: The general format of the industry is traffic @ pressure/time, such as 0.2m³/min @ 0.3MPa “, the order cannot be reversed; If the minimum guarantee value is emphasized, it is appropriate to use” ≥0.2m³/min @ 0.3MPa replace colloquial expressions such as “no less.
3. Sample comparison (compliance vs common errors)
✅Compliance writing: ≥0.2 m³/min @ 0.3 MPa(Spaces are recommended to improve readability, but not mandatory)
❌Error writing: 0.2m3/min@0.3mpa(Unit case error, m³ unlabeled, no space ambiguity)
✓ Correct: ≥0.2 m³/min @ 0.3 MPa
✗ Incorrect: 0.2m3/min @ 0.3mpa
Note: “3” in m³ should be superscript; The initial letters of MPa are all written in large numbers; @ it is recommended to leave spaces before and after to enhance readability.
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