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- A kind of stainless steel flux-cored wire has been successfully developed , based on acid slag type system,by adding a bit of oxides and trace of deoxidizer ,adjusting the fluidity of melting slag to increase shielding of the back weld. 在酸性渣系的基础上，通过添加少量氧化物，调整熔渣的流动性，并加入微量的强脱氧剂，以增强背面焊缝的保护，研制成功一种背面不充氩的不锈钢打底单面焊双面成形专用药芯焊丝。
- Flux-cored wire is applied to the austenitic stainless steel pipe by back weld,MAG for the filling and cosmetic weld,at horizontal fixed round welding vertically up. 采用药芯焊丝对奥氏体不锈钢管道进行打底焊接,MAG焊填充及盖面焊,立向上的水平固定全位置焊接。
- STT theory and it's good qualities are anylized and a novel control method for all-position backing weld is brought forward. 分析了 STT理论及其优点 ,提出了一种新颖的全位置打底焊控制思路。
- The results of arc starting and welding tests for titanium alloy are also presented in detail in the paper. Tensile strength of welding joints has reached the demands of welding standard, esp. no spatters on back weld are obtained in contrast with EBW. 文中详述了空心阴极焊枪设计、引弧试验情况及钛合金焊接工艺试验 ,结果表明焊接接头拉伸强度达到标准的要求 ,特别是与电子束焊相比 ,焊缝背面无焊接飞溅
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Backing weld and filling weld by PWT-CWS.02NRT(2) PWT-CWS.;02NRT打底与RMS填盖焊接技术(二)
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼，你很快会恢复健康的。
- The ship beat back against a monsoon. 船逆着季风艰难地行驶。
- I flap the flies away but soon they fly back. 我把苍蝇赶走，但一会儿又飞回来了。
- I never lend books; you never get them back. 我的书决不外借，因为总是有去无回。
- She leaned her head back and whispered the news. 她向后仰着头，小声说出了这个消息。
- The talks have been put back to Friday morning. 谈判推迟到星期五早上进行。
- When doing a grooving and hammer breaking experiment on a sample in the technology assess teal of fibrin root welding, find that fibrin backing weld will easily produce a special root incomplete fusion flaw. 摘要在进行一次纤维素根焊的工艺评定试验的过程中，对取样进行刻槽锤断实验时，发现采用纤维素打底焊容易产生一种特殊的根部未熔合缺陷。
- He hated to tuck his tail and back down now. 他讨厌此时夹着尾巴退回来。
- After a long coma the sick man slowly came back. 昏睡了好久以后，那个病人慢慢地恢复了活力。
- As welding is conducted for the mediumcarbon alloy steels using austenitic electrodes, two kinds of cracks,hot crack and fusion zone crack,can be found in backing weld of dissimiar metal weld. 采用奥氏体焊条焊接中碳合金钢时,发现了两种形态的裂纹:底层焊道中的热裂纹和熔合区裂纹。
- Back in Nigeria we used to play a lot of tennis. 我们以前在尼日利亚经常打网球。
- The crowd fell back to let the ambulance through. 人群往后退，让救护车通过。
