反粒子

In particular, every type of particle of which matter is composed has an equal and opposite antiparticle composed of antimatter.

尤其是，构成物质的每一种粒子都有相同而性质相反的构成反物质的反粒子。

Matter and antimatter are perfect opposites; for each of the basic particles of matter, there exists an antiparticle, in which properties such as the electric charge are reversed.

物质和反物质是理想的对立事物；对于每一种基本物质粒子而言，存在一种反粒子，它具有象电荷颠倒那样的特性。

Anderson (1905-1991)—the antiparticle of the electron—in the fall of 1932, when people gradually realized that a new milestone in physics had been reached.

Anderson ， 1905 - 1991）发现了电子的反粒子以后，大家才渐渐认识到反粒子理论又是物理学的另一个里程碑。

Utilizing the symmetric property of the hyperbolic complex space-time, we may explain the correspondence relations of time inversions, energy inversions and complex conjugate transformations.

利用双曲复时空间的对称性，可以解释时间反演、能量反演与复共轭变换的对应关系，能够找出正、反粒子的时空对应点。

Itwas found that the"out-group"antiparticles of Bose type, which came into being because of CP ( charge conjugation-parity conservation) violation in the early universe and became heavier due to the phase transformation from low temperature to high temperature, are the supersymmetry companionsof the"in- group"particles of Fermi type.

研究了编内粒子和"编外"粒子的对称性，发现因宇宙早期CP破坏导致从低温到高温的相变而变重的玻色型"编外"反粒子是费米型编内粒子的超对称伴子。

In the "indirect" process, first observed in neutral kaon particles in 1964, quantum mechanics allows particles to change into their antiparticles and back again in a process known as "mixing". In 2001, The BaBar team, working at the Stanford Linear Accelerator -- and independently the Belle collaboration at the KEK laboratory in Japan -- were the first experiments to detect this in a B meson. BaBar observed "direct" CP violation in 2004 by showing that the number of decays observed for B mesons was higher than for their antiparticle equivalents.

在&间接&过程中，量子力学允许粒子在一种被称为&混合&的过程中，在自身与其反粒子之间相互转变。1964年人们第一次在中性K介子上观测到这种现象。2001年，在斯坦福直线加速器中心工作的BaBar研究组和另一个日本高能加速器研究中心的Belle研究小组各自独立地第一次在实验中观测到这种现象发生在B介子上。2004年，BaBar小组观测到了&直接&电荷宇称不守恒，他们发现观察到的B介子的衰变数量要高于其对应的反物质。

The Tevatron collider and its bigger cousin, the Large Hadron Collider at CERN in Switzerland, can smash matter and antimatter particles together to create energy, as well as new particles and antiparticles.

一万亿电子伏对撞机及其大堂兄，大型强子对撞机瑞士，在欧洲核子研究中心能在物质和反物质粒子粉碎共同创造能源，以及新的粒子和反粒子。

Charge symmetry states that particles should behave exactly like their alter egos, antiparticles, which have exactly the same properties but the opposite charge.

电荷对称性是说，粒子与其反粒子的行为精确一致，粒子与反粒子除电荷相反外性质相同。

If a particle/antiparticle pair comes in contact with each other, the two annihilate and produce a burst of energy, which may manifest itself in the form of other particles and antiparticles or electromagnetic radiation.

如果粒子/反粒子彼此相遇，那二个粒子湮灭并且产生能量爆发，可能以其它粒子形式和反粒子或电磁辐射显示它自身。

Itwas found that the"out-group"antiparticles of Bose type, which came into being because of CP ( charge conjugation-parity conservation) violation in the early universe and became heavier due to the phase transformation from low temperature to high temperature, are the supersymmetry companionsof the"in- group"particles of Fermi type.

研究了编内粒子和&编外&粒子的对称性，发现因宇宙早期CP破坏导致从低温到高温的相变而变重的玻色型&编外&反粒子是费米型编内粒子的超对称伴子。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。