vertical ladder
vertical ladder
[新英汉石油技术词典]
vertical ladder竖梯，直梯
是什么意思，vertical ladder的解释，vertical ladder的翻译
[海运英汉词典] vertical ladder
[石油英汉词典] vertical ladder
[航海英汉词典] vertical ladder
[船舶英汉词典] vertical ladder
[船舶工程英汉词典] vertical ladder
vertical ladder
[新英汉石油技术词典]
vertical ladder是什么意思，vertical ladder的解释，vertical ladder的翻译
[海运英汉词典] vertical ladder
[石油英汉词典] vertical ladder
[航海英汉词典] vertical ladder
[船舶英汉词典] vertical ladder
[船舶工程英汉词典] vertical ladder