navigation channel
短语词组
- south navigation channel 南航道
- siltation in navigation channel 航道廻淤
- estuary navigation channel regulation 河口航道整治
- navigation channel dredging 航道疏濬
- outer navigation channel 外航道
- mountainous navigation channel regulation 山區航道整治
- signal for navigation channel 通航水道信號
- deep navigation channel 深水航道工程
- navigation channel variation 航道變化 返回 navigation channel