In this case, the 14th Five-Year Plan for the Development of the Maritime System emphasizes the need to establish a comprehensive and dynamic air base as part of the integrated land-sea-air-space safety assurance system for maritime transportation. For maritime transportation, quickness, safety, ...
If d4 in the condition (2) becomes larger than the upper limit, i.e., 0.016f, the image surface will curve toward the negative side and, at the same time, unnecessarily large negative distortion will be caused. If d4 becomes smaller than the lower limit, i.e., 0.013f, symmetry of...