beam of variable cross-section
[力学英汉词典]
beam of variable cross-section变截面梁
是什么意思,beam of variable cross-section的解释,beam of variable cross-section的翻译
[海运英汉词典] beam of variable cross-section
beam of variable cross-section
[力学英汉词典]
beam of variable cross-section是什么意思,beam of variable cross-section的解释,beam of variable cross-section的翻译
[海运英汉词典] beam of variable cross-section