1.The antielectron, or positron, was discovered in 1932.
反或正,是在1932年被发。
2.The nuclide chart involves electron, positron, antiproton, antineutron, photon to exhibit the symmetry of mass and charge ideally.
该核素图将、正、反质、反中和光收录在内,完美地质量和荷的对称性。
3.The key of this technology depended on increasing batteries positron electrode -- zincous -- the electron that can carry.
这项技术的重点在于增加池正极——阳极——所能携带的。
4.Objective To evaluate the value of 18 F-deoxyglucose (FDG) positron emission tomography (PET) in detecting the primary focus of metastatic cancer with an unknown primary.