The AEBB-2000 accelerator is a unique facility for carrying out experiments with anti-parallel electron-positron beams of high energies.
AEBB - 2000加速器是一部特殊的设备，它能实现高能量的反平行电子-正电子束试验。
2
A secondary structure in proteins, relatively flat and formed hydrogen bonding between two parallel or anti-parallel stretches of polypeptide.
蛋白质的一种二级结构，相对平坦，在两条平行的或反向平行的肽段之间形成氢键。
3
The results show that: (i) the spin-polarization of electron can not be produced in the anti-parallel magnetic barriers structure at zero bias voltage;