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- hydrogen brittleness of copper [机] 铜氢脆性
- Results show that the brittle fracture is mainly caused by hydrogen brittleness that results from the oxidation arid absorbing hydrogen of copper tube during braze welding. 同时在加热和冷却时，由于异种材料的热胀系数差别过大，产生的较大热应力作用于已存在的裂纹，促使裂纹二次扩展，甚至使得晶粒脱落产生空洞，最终导致焊接接头漏气失效。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- The brittleness of anile red blood cell is bigger. 衰老红细胞的脆性较大。
- A large cooking pot made of copper or often of iron. 金属锅用铜或铁铸成的大煮锅。
- Zambia is the world's largest exporter of copper. 赞比亚是世界上最大的铜输出国。
- The results show that T225NG Ti-alloy has good property of resisting hydrogen brittleness in atmosphere and in loop water. 研究结果表明:T225NG钛合金在空气和高温高压高纯水的环境下具有良好的抗氢脆性能;
- The fusion of copper and zinc make the metal brass. 铜和锌的熔化制成黄铜。
- Thin wires easily melt if they are made of copper. 如果用铜制细导线极易熔化。
- An alloy of copper with10 percent tin. 炮铜一种掺有10%25的锡的铜合金
- Copper oxide is made up of copper and oxygen. 氧化铜是由铜和氧组成的。
- Simple as it is,the new embedded atom theory is applicable to metallic hydrogen brittleness,point defects(impurity and vacancy),surface reconstruction,surface segregation and phase stabilization of alloys. 介绍了一种新的EAM理论,它表述简单,而且已经成功地用于金属的氢脆、点缺陷(杂质和空位)、表面重构、合金的表面偏析和相稳定的特性的研究。
- He was hammering the sheet of copper flat. 他正把铜片锤平。
- Due to sulfurization,hydrogen brittleness,and electrochemical corrosion,the casing of large size of old oilfields is worn and hence has a negative effect on the oil well production. 针对老油田大尺寸套管上部因硫化、氢脆以及电化学腐蚀作用而导致破损、影响油井生产的情况;
- A vein of copper was seen criopping out. 可以看见一条铜矿矿脉露出地面。
- The mechanism of brittleness of the alloy has been discussed. 对硬质含金脆性机理进行了探讨。
- Zinc alloy coatings can be obtained from suitable range of bath, and it has attracted a great attention due to their unique high corrosion resistance, low hydrogen brittleness and chemical stability. 锌合金镀层可以在适宜的镀液中比较容易的沉积出来,它具有优异的耐蚀性、低氢脆性和化学稳定性,已引起人们的极大关注。
- The valences of copper are 1 and 2. 铜的化合价是+1价和+2价
- Brittleness of cluster rachises can also be a problem. 集束花茎脆性也可以是一个问题。
