Created using copper and steel, the clock rises up to three stories. These are made using copper . Humans began using copper as early as 3,000 years ago. Human beings have used copper and its alloys for thousands of years. In their place, PCBs use copper ‘traces'. Combinations with other parts of speech
If copper is used , companies have to create costly support structures. At that time, copper was being used to make telephone wires and electric equipment. The most important part of using copper is altering it so that it solidifies at low temperatures. 使用铜 和钢管的缺点是这两种金属的重量明显超过铝,而不是作为铝的延展性。The disadvantage of using copper and steel tubing is that both metals weight significantly more than aluminum and are not as malleable as aluminum. 现今微电子技术中,0.35微米的使用铝作导体,0.25微米的使用铜 。 Current technology uses micro-electronics of about 0.35 micron using aluminum as conductors, 0.25 micron sizes using copper as conductors of electrons. 甲T型热电偶具有颜色蓝色,并且使用铜 和康铜作为其成分的金属。 A type T thermocouple has the color blue, and uses copper and constantan as its component metals. 我们不能使用铜 或银或者金,因为这些金属会在烤箱里融化。 We can't use bronze or silver or even gold, because those metals will melt in the oven. 他们使用铜 和铁制的戒指、或者以称好一定重量的铁牌,作为货币。 They use either brass or iron rings, determined at a certain weight, as their money. If copper was used , support structures would be heavier, more numerous, and more expensive. 你是否要把人抓起来,强迫他们使用铜 ,即使他们不再需要用铜的时候也这样做?? Are you going to arrest people and force them to use copper , even when they no longer need it? 大约在六、七千年以前我们的祖先就发现并开始使用铜 。 About six or seven thousand years ago, Chinese ancestors discovered and began to use copper . About six or seven thousand years ago, Chinese ancestors discovered and began to use copper . 大约在六、七千年以前中国人的祖先就发现并开始使用铜 。 About six or seven thousand years ago, Chinese ancestors discovered and began to use copper . About six or seven thousand years ago, Chinese ancestors discovered and began to use copper . 铜是最早发现旧的金属,之一,早在三千多年前,人类开始使用铜 。 Copper was one of the earliest to find old metals, and as early as three thousand years ago,people began to use copper . 但如果使用银作为散热器太昂贵,最好的解决方案是使用铜 。 However, if using silver as a heat sink would be too expensive, the best solution is to use copper . 但是,如果使用银作为散热器,它将太昂贵,因此最好的解决方案是使用铜 。 However, if silver is used as the heat sink, it will be too expensive, so the best solution is to use copper . Generally, the 300mm foundry fabs process wafers using only copper interconnects. By using only copper interconnects, switch makers can lower the capacitance. Copper can be used on surfaces or woven into fabrics to prevent the spread of bacteria.在许多可再生能源系统中,使用铜 的效率是传统系统的12倍。 In many renewable energy systems, there is 12-times more copper being used than in traditional systems to ensure efficiency. 主要使用铜 (Cu),因为它具有优越的热导率,并且可以通过超精密切削进行加工。 Copper (Cu) is used mainly since it is superior in heat conductance and can be processed by ultraprecision cutting. 因此,氨制冷装置中不能使用铜 及铜合金材料,并规定氨中含水量不应超过0.2%。 Therefore, copper and copper alloys cannot be used in ammonia refrigeration units, and the moisture content of ammonia should not exceed 0.2%. 寻找一种灵活且经济有效的解决方案,在不使用铜 和镍的情况下连接换热器。 To find a resilient and cost-effective solution for joining heat exchangers without using copper and nickel.
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