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- The electrodes and fluxes shall be dried according to the requirements, and the grease and rust on wires shall be cleaned before welding. 5焊接前应按规定将焊条、焊剂烘干，焊丝上的油污和铁锈等应清楚干净。
- cleaning before welding 焊接前的清理
- Yon must wash your hands clean before dinner . 饭前，你一定要把手洗干净。
- You must give it a clean before you return it. 在归还以前，你必须把它擦洗干净。
- Yon must wash your hands clean before dinner. 饭前,你一定要把手洗干净。
- Conform the material quality after sandblasting before welding & tracing. 在喷砂后焊接前确认材料质量并跟踪。
- The walls must be perfectly clean before you paint them. 油漆之前必须把墙壁完全擦干净。
- The place needed a good spring clean before we could move in. 那地方得来个大扫除，然后我们才能搬进去。
- He scraped his boots clean before coming into the house. 进屋前他先把靴子擦干净。
- Component installation of nodes connected by bolts or welding required inspection Connections after passing before welding or fastening. 构件安装采用焊接或螺栓连接的节点;需检查连接节点;合格后方能进行焊接或紧固.
- An easy way to get the door to align correctly is to pre-drill the hort hinge flats before welding on the sides of the shoot (it can be done with careful setup and marking out). 一个简单的方法得到的大门差距是正确对齐预先钻前的拍摄地焊接铰链的园艺单位（可以仔细的做设置和划出）。
- Preheat before welding and post-heat can obviously diminish welding cracking.As preheat temperature increases, rate of beryllium welding cracking decreases. 焊前预热及焊后缓冷对抑制裂纹作用显著,且随着预热温度提高裂纹率呈下降趋势。
- This machine is widely used for dusts cleaning before the curtain coater machine or after the heavy sanding machine in the wooden floor finishing line. 广泛用于各种板材涂装生产线之淋幕机前面或重型砂光机后面之灰尘清除。
- Waste water must be cleaned before it runs into the river. 废水流入河里之前必须净化。
- The last people who lived here were a little messy as you can see, but we'll do a lot of cleaning before the next people move in. 你可以看得出，住在这里的前一个房客弄得有点乱，但是下一个客人住进来之前我们会大搞清洁的。
- And then they are cleaned before a milking device is used. 然后在产奶仪器使用之前它们就被清洁了。
- Tanks, vessels, drums, etc., which have contained flammable or toxic liquids will be made safe and the internal atmosphere tested for LEL before welding, cutting, or heating is undertaken on them. 装有可燃性或者有毒液体的槽罐，容器等要保证在用于焊接，切割作业之前安全可用，进行压力测试。
- It introduced that the using of volume tube,and had take chemical cleaning before it demarcation request.And summarized some questions about chemical cleaning for it. 简单介绍了体积管的用途,针对标定前的要求,对体积管进行了清洗,总结了清洗中需注意的问题。
- The presentation starts with a short overview of the coming disinfection norms which highlight the value of cleaning before disinfection and sterilizing procedures. 本文先介绍新规范中强调的消毒灭菌程序之前的清洗的重要性。
- Completely remove the rust, oil dirt, water and so on from the surfaces, keep the coated surfaces clean before scraping. 涂刮前从表面彻底除去锈鳞、油污及水份等,保持被涂物表面清洁、干燥。
