threads safety overlock stitch

The technology of producing microcrystal wax from strengthened VGO No.

对玉门减压深拔减五线生产微晶蜡的工艺进行了研究并进行了工业应用,生产结果表明:以减压深拔减五线为原料经酮苯脱蜡脱油、白土精制生产微晶蜡,操作过程平稳,酮苯脱蜡脱油过程过滤速度较快,脱蜡油和粗蜡的平均收率可达到78。

The new layout of cities in Yunnan is "three alongs and five lines, which are along the rivers, along the main railways and along the border and superhighways from Shengjingguang to Ruil.

云南省城市布局的新格局 :“三沿五线”。