Young girls are often first exposed to nickel when they get their ears pierced, and therefore are more likely to develop a sensitivity to the metal that can cause allergic reactions later on.
当年轻的女性穿耳洞的时候,她们第一次接触到镍金属,因此他们很可能对产生过敏反应的镍金属形成过敏。
Nickel followed, topping $26,000 a tonne for the first time.
而Nickel也紧随其后,首次达到每公吨26000美元的高价。
To produce embossed holograms, we have to make holography nickel master origination first.
为了产生浮雕全息图,我们要掌握全息镍起源第一。
And at first this was done by Davidson and Germer, and they were American scientists who tried diffracting electrons from a nickel crystal.
这个实验首先是由,美国科学家Davidson和Germer完成的,他们尝试从镍晶体中衍射电子。
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