hydrogens

They are also organic compounds in which one or more of the hydrogens in ammonia is replaced with a more complex group. Studies show that antioxidants are known to decrease these heterocyclic amines.

它们也是有机物氨中的一个或多个氢被替换成更复杂的组成，研究显示抗氧化剂能减少这些杂胺环。

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The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol.

桐油的共轭双键具有极强的反应活性，易与苯酚芳环上邻或对位的活性氢发生傅氏取代反应。

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The other two activated hydrogens still can take place mannich reaction with amine and formaldehyde.

余下的两个活性氢位置仍然能与胺类、醛类发生曼尼期碱的缩合反应.

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The hydrogens no longer eclipse each other and are said to be staggered.

氢原子彼此之间不再是重叠的,而是交叉的了.

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Those that are aligned in the place are called equatorial hydrogens.

那些在平面上定向的氢叫做平伏氢.

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A methane molecule is composed of one carbon atom attached to four hydrogens.

甲烷分子由1个碳原子与4个氢原子构成。

《柯林斯高阶英汉双解学习词典》

In there compounds, the cyclopentadiene ring has only four hydrogens.

在这些化合物里, 环戊二烯环只有4个氢.

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As the starshine intensified , it eventually stripped electrons from the hydrogens, ionizing the atoms.

一旦星光增强,氢原子中的电子最后就会被打掉, 形成离子.

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Those that are aligned perpendicular to the plane are called axial hydrogens.

与平面垂直定向的氢叫做直立氢.

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