Paragraph Styles; Font Names; Font Size; Font Color; Bold ; Italic; Underline; Align Left; Center; Align Right; Bullets; Numbered List; Decrease Indent; Increase Indent.
段落样式；字体名称；字号；字体颜色；加粗；倾斜；下划线；左对齐；居中对齐；右对齐；项目符号；编号列表；减少缩进量；增加缩进量。
There is an indent on the flange of pipe body for arranging a sealing ring in it during the assemblage of pipeline in order to increase its tightness.
为解决现有凸缘式预制溜管密封性差的问题，本发明在管体的凸缘上带有凹槽，以便在装配中安装密封圈，提高其密封性。
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