The concentricity and smoothness of the parts are guaranteed.

It analyzes the arched culvert construction scheme and technology before the construction,represents the die processing and setting and concrete construction,and introduces form board joint junction treatment technology and method on the special position,which will insure the smoothness of concrete external appearance.

The smoothness of the alloy for electrochemical and mechanical polishing was assessed;and the potentiodynamic polarization technique was carried out in Hanks solution to verify the corrosion resistance.

Rainfall affects surface smooth finish of red Fuji apple;

The characteristic of the flow obstruction of water in carbon steel tube, stainless steel tube and red copper tube is determined by the experiment in the paper, superficial roughness and smooth finish of three kinds of tubes are analysed with the instruments;and the obsuruction coefficient difference is analysed and discussed.

The smooth finish of siC whiskers was affected by the whisker′s growing supersaturation in some special areas and the pr.

The influence of ingredient, temperature and time of the polishing solution workpieces surface finish is discussed.

It is emphasised to discuss about toughening methods ,cracks and their eliminating methods, surfacefinish, fire retardance in the process of development of BMC pasts.