但用来制造管道的钢中通常掺入了合金成分钴来增强材料的强度。
The steel used in the pipes, however, is usually alloyed with cobalt to make it stronger.
—墓碑技术：宾夕法尼亚州韦恩堡的一家公司，为墓碑市场推销一种硬币大小、封装在不锈钢中的微芯片。
Tombstone tech: A Waynesburg, Pa., company sells a coin-size, stainless steel-encased microchip for grave stone markets.
锰通常被加入钢中以增加其拉伸强度。
Manganese is often added to steel to increase its tensile strength.
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