half-period zone

download_20070327143634_13405 ... 半周期条 half-period strips 半周期带 half-period zone 半影角 half-shadow angle ...

气象学专业词汇英语翻译H-2... ... 半弧角 half-arc angle 半周带 half-period zone 半功率波宽 half-power beam width ...