这是一个简单公交查询系统的源码，适用于交通行业。-This is a simple source code query system bus for the transport sector.

民机构型初步设计与推进系统一体化设计.pdf-Preliminary design of the public sector and type of propulsion system integration design. Pdf

The transportation sector is one of the largest sources of energy consumption and CO2 emissions. The most important and difficult step in estimating transportation CO2 emissions is to accurately estimate vehicle CO2 emission factors (EFs)