Planning principle of ecological city and its design requirement;

This paper briefly expounds the structural parameters of and design requirements for the common static duster,and puts forward some measures for improving the problems existing in the use of the duster.

The function of asphalt treated permeable base was analyzed, and the design requirement,structure layer design and mechanical properties with their influencing factors of asphalt stabilized base course mixture were discussed.

It also makes clear the design requirements of lane system device,this will ensure and increase the nature and operating life greatest at the most.

Based on people’s physiological and psychological requirements, we analyze in this paper the spatial impression of underground public space, point out its inherent features, and present corresponding design principles and design requirements in perspective of security, comfort, con.

To supply a convenient and expandable tool to organize the design requirements of a new aircraft and estimate its basic design parameters during conceptual design, the Environment of Design Requirements Input and Preliminary Sizing (EDRIPS) was developed.

In this paper, the design demand and structures used in city rail s EMU bogie are analyzed in detail.