【period_element】什么意思_英语period_element的翻译_音标_读音_用法_例句_在线翻译

period element

周期元素

... period counter 周期计数器 period element 周期元素 period geomagnetic variation 地磁周期性变化 ...

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短语

period of element [数] 元素周期 ; [数] 元素的阶

period 2 element 第2周期元素

period 3 element 第3周期元素

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化学

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s1 So for the fourth period, now we're into the 4 s 1 3d for potassium here. And what we notice when we get to the third element in 4s2 and the fourth period is 3d that we go 4 s 2 and then we're back to the 3 d's.

对于第四周期到现在我们来到钾的1,然后我们返回到,我们注意到当我们看到第三个元素,第四周期我们来到,然后我们返回到。

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The tassel, derived from turban ornaments and reflecting the looser, freer clothing of the period, became a quintessential element of art deco jewelry.

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And it was during this period that the border tycoon displayed the another key element of Greek tragedy - hubris.

BBC: Sean Quinn's jailing reminiscent of Greek tragedy
The ad series is an interesting element in what has proven to be an active campaign period.

CNN: Iraq ads promote united nation

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