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- It analyzes the inspection measure and patch weld technique on the welded seam defect,gave a good proposal for the repair on the welded seam and provide an experience for quality control of the welded seamthe boiler drum. 对锅炉汽包焊缝缺陷的检验措施及挖补工艺技术进行了分析和研究，为汽包焊缝缺陷的修复提出了良好方案，给锅炉汽包焊缝的质量控制提供了借鉴。
- Their marriage has been going through a bad patch. 他们的婚姻正处在困难时期。
- The lorry went into a spin on a patch of ice. 卡车在一片冰地上打滑了。
- Her latest novel isn't a patch on her others. 她这部新小说比以前所写的差得远。
- Patch Weld with Artificial Electric-arc Welding at Voltage Leaking Points 带压泄漏点的手工电弧焊补漏
- The boy's trousers need a patch on the knee. 这孩子的裤子膝盖上需要打个补丁。
- Some metals weld better than others. 有些金属容易焊，有的不容易焊。
- He tried to patch up their quarrel. 他试图平息他们之间的争吵。
- She inserted a patch in the sleeve. 她给袖子打了个补丁。
- The child's jeans had a patch at the knee. 这孩子的裤子在膝盖处有一块补钉。
- There was a patch of garden behind the house. 屋後有一小块园地。
- He wears a black patch over his right eye. 他右眼上戴著黑色的眼罩。
- Our firm has just struck a bad patch. 我公司刚遭厄运。
- The gauze patch applied to his wound is dirty. 裹在他伤口上的纱布脏了。
- It takes speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
- It take speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
- patch weld 补孔焊缝,补焊
- For ensuring the patching welding quality and consequently ensuring the safe pipeline operation, the tensile property of the patched joint of an in-service gathering pipeline was studied. 为了保证补焊的焊接质量,从而保证管道的安全运行,研究了在役油气输送管道补焊接头的拉伸性能。
- What they accomplished was not a patch on what they had planned. 他们的成就远不如预期。
- We ran into a patch of thick fog just outside Edinburgh. 我们就在爱丁堡城外遇到了浓雾。
