Shuttle Endeavour is set to launch April 19 with the $2 billion Alpha Magnetic Spectrometerparticle detector.
奋进号航天飞机计划将于四月19号升空，携带价值20亿美元的阿尔法磁谱仪粒子探测器。
2
When and where a charged particle with given energy will enter or leave the magnetic field in a mass spectrometer, and how we use quantum mechanics to calculate them are interesting problems.
一个已知能量的带电粒子在质谱仪中于何时何地进入和离开磁场，如何用量子力学来计算是个很有意思的问题。
3
The detailed descriptions are made for the particle identification of the combined systems of the spectrometer and the detectors.