A proton is an elementary particle of matter that possesses a positive charge.
质子是带正电荷的物质的基本粒子。
A proton contains three charged quarks bound by the strong force and its radius is defined as the distance at which the charge density drops below a certain value.
一个质子由三个带电的夸克通过强相互作用力结合而形成，它的半径是由电荷密度降到某一确定值的距离来确定的。
Proton and neutron form a charge doublet .
质子和中子构成电荷双重态。
Maxwell's equations are "asymmetrical": electricity has an electron monopole and a proton monopole, each with opposite charge, but magnetism does not.
Maxwell方程组是“非对称的”：电场有一个负电极子和一个正电极子，带着不同的电荷；但磁场却没有。
Deuteron: the nucleus of a deuterium atom consisting of a proton and a neutron regarded as a subatomic particle with unit positive charge.
氘核：氘原子的原子核，由一个质子和一个中子组成，被视为带单位正电荷的亚原子。
A proton has positive charge and an electron (has) a negative charge, but a neutron has neither.
质子带有一个正电荷，电子带有一个负电荷，但这两种电荷中子都没有。
A proton has an electrical charge that is equal to that of the electron, but the proton weighs almost two thousand times as much as the electron.
质子有一个电荷，与电子的电荷相等，但是，质子的重量几乎是电子的两千倍。
Unlike either the electron which has a negative charge or the proton which has a positive charge, the neutron has no charge at all.
中子既不象带负电荷的电子，也不象带正电荷的质子，它根本就不带任何电荷。
A proton carries a positive charge and repels each other.
质子带正电荷，互相排斥。
The proton carries a positive charge and the electron carries a negative charge but the neutron carries neither.
质子带正电荷，电子带负电荷，中子两种电荷都不带。
A proton has positive charge and an electron has negative charge.
质子带正电荷，电子带负电荷。
An electron has a negative charge, a proton has a positive charge.
电子带负电荷，质子带正电荷。
An electron has a negative charge, a proton has a positive charge.
电子带负电荷，质子带正电荷。
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