| 1. | Positive ions drift downward, negative ions drift upward .
正离子向下漂移，负离子向上漂移。 |
| 2. | If one or more electrons are removed, the remaining positively charged structure is called a positive ion .
如果移去一个或多个电子，剩下来带正电荷的结构就称为正离子。 |
| 3. | To evaluate the potential energy we first observe that every positive ion is in a position equivalent to that of every other position ion .
为计算势能，我们首先要注意到，每一正离子所处的位置与另一正离子所处的位置完全相当。 |
| 4. | The salt crystal lamp binds the negative ions with the excess positive ions
盐晶灯可中和负离子和过多的正离子。 |
| 5. | The reactive characteristics of tertiary olefins over positive ion exchange resin
叔烯烃在阳离子交换树脂上醚化反应规律 |
| 6. | Standard practice for oil spill source identification by gas chromatography and positive ion electron impact low resolution mass spectrometry
用气相色谱法和正离子电子冲击低分辨率质谱法识别溢油源的标准实施规程 |
| 7. | Imagine that the heavy positive ions of the crystal lattice are held in place by strong springs ( the chemical bonds )
想像在晶格中，质量比较大的正离子被强力弹簧（代表化学键）所束缚，而热能会激发离子以某些特定的频率振动。 |
| 8. | In low - temperature superconductors , the crucial interaction among the electrons is mediated by vibrations of the metal ' s lattice of positive ions
在低温超导体之中，电子间关键的交互作用，是藉著金属晶格里正离子的振动来传递。 |
| 9. | Edta ethylenediamine tetra - acetic acid , a compound that acts as a chelating agent , reversibly binding iron , magnesium , and other positive ions
学名为乙二胺四乙酸，是一种具有螯合作用的化合物，能够可逆地结合铁离子、镁离子以及其他正离子。 |
| 10. | In contrast , when an ultraintense pulse of light strikes a plasma ( a gas of electrons and positive ions ) , it propels the electrons forward close to the speed of light , as we described above
相较之下，当超强的脉冲光打上电浆（由电子与阳离子组成的气体）时，会驱动电子几近光速向前行去，一如前述。 |
