water ballast
短语词组
- water -ballast roller 水镇重路碾
- water r ballast 压舱水
- water ballast space 压载水舱
- water ballast capacity 压载水舱容量
- Auxiliary water ballast tank 辅助压载水舱
- water ballast hold 水压舱
- water ballast chamber [船]底水舱
- water ballast pollution 压载水污染 返回 water ballast