pitch of thread_海运英汉词典
pitch of thread
[海运英汉词典]
pitch of thread螺纹距
是什么意思，pitch of thread的解释，pitch of thread的翻译
螺纹距
pitch of thread_海运英汉词典pitch of thread
[海运英汉词典]
pitch of thread是什么意思，pitch of thread的解释，pitch of thread的翻译
