There is now an integrated system of safe bicycling routes in most cities in all three countries. 现在有一个综合系统的安全骑自行车路线在大多数城市，所有这三个国家。
As a branch of modern simulation technology, integrated avionics simulation is the outcome of the system emulation technology and the avionic integrated system combined. 综合航空电子仿真系统是系统仿真技术与航空电子综合系统相结合的产物，是现代仿真技术的一个重要分支。
