短语词组短語plasma ring confinement 等離子躰環形約束plasma confinement time 等離子躰約束時間Improved plasma confinement 改善等離子躰約束Magnetic confinement plasma thruster 磁約束等離子躰推進器magnetic confinement of plasma 等離子區的磁密封;等離子躰磁約束 返回 plasma confinement