The most actively traded stock on the Shanghai index was China Southern Airlines, the nation's biggest carrier by fleet size.

上证综指成份股中交易最活跃的股票是中国南方航空(China Southern Airlines)。 按机队规模衡量，南航是中国最大的航空公司。

Rank 9. Virgin Australia: formerly Virgin Blue Airlines, is Australia's second-largest airline as well as the largest by fleet size to use the Virgin brand.

前身是维珍蓝航公司的澳洲维珍航空公司排名第九。它是澳大利亚第二大航空公司，也是维珍旗下机队规模最大的一家。

As the ship or fleet size is defined, the channel width is dependent on the track zone width, and track zone width is dependent on the drift Angle of navigation.

当船舶或船队的尺度确定后(主要是长和宽)，航道宽度即取决于航迹带宽度，而航迹带宽度又取决于航行漂角的大小。