他知道了黄铜是铜和锌的合金。
他们通过铜和锌的熔合来制造黄铜。
这些管道是由铜和锌的合金制成的。
黄铜是通过铜和锌的熔合而成的。
铜和锌的合金叫普通黄铜。
像这种样子的电池，铜和锌的质量至关重要。
The quality of the copper and zinc can be a problem for a battery like this.
我们将铜和锌摆在两个不同的玻璃实验瓶里。
How do copper and zinc differ in their reaction to hydrochloric acid?
砂质土壤上造林会引起土壤酸化，影响铜和锌的释放。
Afforestation in sandy soils can cause soil acidification and affect Cu and Zn release.
黄铜：铜和锌的合金，硬度和可加工性让它成为重要的合金。
Brass: Alloy of copper and zinc, important for its hardness and workability.
支承结构包括铜和锌以及小于1％（重量）的铝、锡或铝与锡。
The support structure includes copper and zinc, and has less than 1 weight percent of aluminum, tin or aluminum and tin.
一群企业家们最近发现了一种方法，能够将镍、铜和锌混在一起变成金子。
A group of entrepreneurs has just discovered a way of taking nickel, copper, and zinc and turning them into bullion.
矿产主要有煤、铜和锌，农产品包括米、花生、甘蔗、水果、蔬菜和烟草。
Primary minerals are coal, copper and zinc, and agricultural products include rice, peanuts, sugar cane, fruits, vegetables and tobacco.
烟叶还原糖、钾、铁、锰、铜和锌含量较高，烟叶尼古丁、氯离子和镁含量偏低。
The content of reducing sugar, K, Fe, Mn, Cu and Zn were higher, but that of nicotine, chloride ion and Mg were low in tobacco leaf.
钙与氮、磷、铜和锌呈正相关关系，与其他4种元素呈显著负相关关系，尤其是钾。
Ca was positive correlation with n, p, Cu and Zn, but negative correlation with other 4 nutritional elements, especially with K.
以离子色谱法（IC）同时测定35例正常志愿者及45例患有消化道良性疾病或不同期癌症患者的血清铜和锌。
Serum copper and zinc were simultaneously determined by ion-exchange chromatography (IC) in 35 normal volunteers and 45 patients with benign diseases or different stage cancers of the digestive tract.
黄铜(Brass)：黄铜是铜和锌的合金，一般锌含量在30 ~ 40%之间，黄铜的颜色随锌含量的增加从暗红色。
Brass (Brass) : Brass is an alloy of copper and zinc, general zinc content in the 30 to 40%, the color of the Brass between with the increase of the content of zinc from dark red.
斑秃患者头发中锌和铜低于正常人。
Patients with pelada have lower levels of zinc and copper in their hair.
这个国家拥有煤炭、铁矿石、石灰石、菱镁矿、石墨、铜、锌、铅和贵金属等矿脉。
The nation boasts veins of coal, iron ore, limestone, magnesite, graphite, copper, zinc, lead and precious metals.
在每个土豆上插上一个铜电极和一个锌电极，保持一定距离。
Insert a copper electrode and a zinc electrode into each potato, fairly far apart.
在大西洋中，有一处含有铜，铁，锌，金还有银的沉淀区域长达600英尺，高达120英尺，和休斯敦巨蛋体育馆一样大。
One deposit of copper, iron, zinc, gold, and silver sulfides in the Atlantic is, at 600 feet across and 120 feet high, as big as the old Houston Astrodome.
这个事件便是我们未来即将面临的所有资源短缺——水泥、铁矿石、煤炭、钢铁、铅、锌、铝和铜。
It is the coming shortage of everything - cement, iron ore, coal, steel, lead, zinc, aluminum and copper.
尽管一般是通过液态锌蘸洗钢铁来镀锌，有时候也会用电解的方法，在电镀镍和铜时就通常使用电镀。
Though galvanisation is often done by dipping steel in liquid zinc, it is sometimes done by electrolysis—nickel and copper plating are normally done this way.
作用——上述物质含有抗氧化剂，例如维生素a、胡萝卜素、维生素c、维生素e、硒、锌、铜和锰，同时它们也是具有抗压力的营养素。
What They Do - They contain antioxidants such as Vitamin a, beta-carotene, Vitamin c, Vitamin e, selenium, zinc, copper and manganese, which are also anti-stress nutrients.
与铜、铝、锌和镍等贱金属一样，特种金属也受到工业活动的推动。
Like the base metals of copper, aluminium, zinc and nickel, speciality metals are driven by industrial activity.
由于来自中国汽车制造商和建筑公司的强劲需求，必和必拓公司2009年最后三个月的铁、铜、锌和镍矿石产出大幅上扬。
The company's output of iron ore, as well as copper, zinc and nickel, surged in the last three months of 2009 because of strong demand from Chinese carmakers and construction companies.
铜、钴、钻石、黄金、锌和其它资源的开采，以及石油开采，曾经占其GDP的75%。
Mining of copper, cobalt, diamonds, gold, zinc and other metals, as well as petroleum extraction, once accounted for 75 percent of its GDP.
现在这项作品正在“米兰国际家具展览会”参展，其供电的能源来自西红柿中的酸性物质，锌和铜之间发生的化学反应。
Currently exhibited at the Milan Furniture Fair, the design collects energy from a chemical reaction between tomato acids, zinc, and copper.
比如，过量的锌会妨碍铁和铜等其他营养成分吸收。
An excess of zinc, for example, can interfere with absorption of other nutrients, including iron and copper.
伦敦商品交易所和纽约商品交易所的铜金属价格双双下滑，锌、镍、铅、锡等金属的价格有所下降。
Copper resumed a decline in London and New York. Aluminum, zinc, nickel, lead and tin also fell.
伦敦商品交易所和纽约商品交易所的铜金属价格双双下滑，锌、镍、铅、锡等金属的价格有所下降。
Copper resumed a decline in London and New York. Aluminum, zinc, nickel, lead and tin also fell.
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