This paper makes a economic comparison for several main heating ways in the residential buildings of centralized heating area, and proposes several principles of heating way selection based on the comparison results.

The author took a practical engineering project as an example,basing on her design experience of recent years,she compared the simplified design method that is usually used with the finite element method on the patterns of distribution of stress and input method,then she proceeded to a primary economic comparison between the results of the two methods.

Technical and economic comparison of ESP and bag filter for boiler gas of thermal power plants;

This article describes the production processes using two different feedstock routes and makes simple economic comparison.

This article describes the new process of methyl methacrylate which uses methanol,carbon monoxide and acetone as raw materials,via acetone cyanohydrin(ACH) route;makes the simple economic comparison between the concept design of Chem.

The economic evaluation in selection of design standards for waterlogging control had never been proceeded all over the county.

Based on the pile type analysis process of Nanjing Library, suggestions are given in aspects of the design possibility, studying the prospecting reports carefully and discussing with wide minds, economical comparison, etc.

Giving the result of the different foundation forms of several real engineering economical comparison to the CFG pile in combined foundation.

Makes a technical and economical comparison between two air-exhaust methods in underground garage, and derives a conclusion that the method of all exhaust air drew in top is reasonable and economical.

The general situation of the study of this technique in world, the applied direction and the specialty, and the economy comparison with other non-pipeline techniques to storage and transport gas is presented in this paper.