8078.When trpairing large,flat surfaces with polyester resins,warping of the surface is likely to occur.one method of reducing the amount of warpage is to
发布于 2021-02-18 18:45:19
【单选题】 A add an wxtra amount of cataluyst to the resin. B use short strips of fiberglass in the bonded repair. C use less catalyst than normal so the repair will be more flesible.
