复杂低交通量道路路面设计过程的发展的英文

development of comprehensive low-volume pavement design procedures

• 复杂:    complex; complicat ...
• 低:    low
• 交通量:    travel; traffic; v ...
• 道路:    road; way; path
• 路面:    road surface; pave ...
• 设计:    devise; project; p ...
• 过程:    process; procedure ...
• 的:    4次方是 The fourth po ...
• 发展:    develop; expand; g ...