In this case, brass pins are dark red/brown because of NO2 fumes released when concentrated nitric acid contacted the brass components.
这里，因为受到浓缩硝酸所释放的二氧化氮的腐蚀，使得黄铜珠子变成深红棕色。
When contacting the softer brass or nickel-silver of locking components, pick and tension tools leave marks in the form of gouges and scratches.
而且当单钩和别子在开锁时和相对柔软的黄铜或镀镍层接触的时候，就会留下凿痕和磨擦的痕迹。
The ideal materials to replace diverse mechanically stressed and abrasion-resistant brass casting components.
是各种机械受力、耐磨铜铸件的理想替代材料。
The chemical components of solution and the electrolysis technique in order to remove Nickel from brass basis without cyanide are investigated.
着重研究了在黄铜基体上无氰退镍液的化学组成及退镍的电解工艺规律性。
ZA alloys have been used to substitute for some traditional alloys such as brass, bronze and babbitt metals to prepare some wear-resistant and anti-friction components.
工业上用其部分替代青铜、黄铜和巴氏合金等制造减摩、耐磨零件。
A series of reliability experiments and analysis were operated on alloy and brass lead frame to compare their influences on components' performances.
为研究支架更替对器件性能和可靠性产生的影响，使用对比的方法，对合金支架和黄铜支架样品进行了一系列的可靠性试验和分析。
The components of aluminium-nickel-brass explosion-preventive spring alloy were determined by orthogonal design and the effects of cold-extrusion deformation on alloy function.
采用正交试验，确定了铝镍复杂黄铜防爆弹性合金的化学成分，并试验了冷挤压变形对合金性能的影响。
The components of aluminium-nickel-brass explosion-preventive spring alloy were determined by orthogonal design and the effects of cold-extrusion deformation on alloy function.
采用正交试验，确定了铝镍复杂黄铜防爆弹性合金的化学成分，并试验了冷挤压变形对合金性能的影响。
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