前体水线面面积系数
forebody waterplane coefficient
水翼小水线面面积船
hydrofoil small waterplane area ship
Cassegrain双反射面天线
Cassegrain dual reflector antenna
阿基米得螺线天线
Archimedian spiral antenna
antenna
Archimedian spiral
阿基米德螺线天线
Archimedian spiral antenna
变形面天线
distorted reflector antenna