以下为句子列表：
英文: A proton has a positive charge and an electron a negative charge, but a neutron has neither.
中文: 质子带正电，电子带负电，而中子既不带正电，也不带负电。
更详细...
英文: In essence, the beam pushes the lighter electrons away from the heavier positive ions, which in turn get left behind, creating a region of excess positive charge and a region of excess negative charge [see box above].
中文: 基本上，这会将较轻的电子从较重的离子中推开，这时候较重的离子会略为落后，而创造出一个带有较多正电荷的区域及另一个带有较多负电荷的区域（参阅上方〈在电子泡泡里〉）。
更详细...
英文: In some kinds of beta decay, a nuclide loses surplus positive charge by emitting a positron (in the same event, a proton becomes a neutron, and neutrinos are also given off).
中文: 以某种贝它衰减，一个核素靠发出一个正电子失去剩余正电荷(在相同的事件中，一个质子变成一个中子，而且也发射微中子)。
更详细...
英文: Nuclides with surplus positive charge are easily made in a cyclotron and are widely generated for medical use.
中文: 具有剩余阳电荷的核素容易地在一个回旋加速器中被制造出来并且被广泛制造用于医学用途。
更详细...
英文: One end of each molecule had a positive charge and the other end had a negative charge.
中文: 每个水分子的一端带上正电荷，而另一端带上负电荷。
更详细...
|
