navigation channel
短语词组
- south navigation channel 南航道
- siltation in navigation channel 航道回淤
- estuary navigation channel regulation 河口航道整治
- navigation channel dredging 航道疏浚
- outer navigation channel 外航道
- mountainous navigation channel regulation 山区航道整治
- signal for navigation channel 通航水道信号
- deep navigation channel 深水航道工程
- navigation channel variation 航道变化 返回 navigation channel