求翻译：从母材到焊缝中心其组织形态依次是带状组织、细晶区、粗晶区、柱状晶，组成相均为珠光体+铁素体，一次焊补未改变试样的显微组织。是什么意思？

From the base metal to the center of the weld morphology, followed by a banded structure, fine grain, coarse grain zone, columnar grain constituent phases are pearlite + ferrite, a welding repair does not change the microstructure of the specimen.

Parent material to weld their organizational patterns, in turn, center is a ribbon organization, fine grained, coarse, column-shaped crystals, and pearls are formed in the body + ferrite, a solder fill samples did not change the microstructure.

From the parent metal to the welded joint center its organization shape is in turn the banded structure, the fine crystal area, the macrocrystailine area, the columnate crystals, the composition for the pearlyte + ferrite, one time welds makes up has not changed the test specimen the microstructure.

From the center of base metal to weld its morphology is banded in turn, fine, coarse grain areas, columnar crystals to form Pearlite + ferrite, welding does not alter the microstructure of samples at a time.

正在翻译，请等待...