| 释义 |
reference datum
reference datumAs used in the loading of aircraft, an imaginary vertical plane at or near the nose of the aircraft from which all horizontal distances are measured for balance purposes. Diagrams of each aircraft show this reference datum as "balance station zero."reference datum
reference datumAn imaginary vertical plane at or near the nose of an aircraft from which all horizontal distances are measured for balance purposes. Also called the balance station zero. See datum or datum line. |