Volume of freight handled in major coastal ports ： refers to the volume of cargo passing in and out the harbor area of the major coastal ports and having been loaded and unloaded 沿海主要港口货物吞吐量：指由水运进出沿海主要港区范围，并经过装卸的货物数量，包括邮件及办理托运手续的行李、包裹以及补给运输船舶的燃、物料和淡水。
