ballast tank emergency flapper
[船舶英汉词典]
ballast tank emergency flappern.主压载水舱应急阀
是什么意思,ballast tank emergency flapper的解释,ballast tank emergency flapper的翻译
[海运英汉词典] ballast tank emergency flapper
ballast tank emergency flapper
[船舶英汉词典]
ballast tank emergency flapper是什么意思,ballast tank emergency flapper的解释,ballast tank emergency flapper的翻译
[海运英汉词典] ballast tank emergency flapper