The plasma is magnetically held in a rocket the shape of a bottle and then expelled at very high velocity to provide propulsion. 這種等離子體被磁場(chǎng)以瓶狀形態(tài)控制在火箭內部，然后，以極高的速度噴射而出，從而產(chǎn)生巨大的推進(jìn)力。
In addition, groups at the University of Pisa in Italy and the Jet Propulsion Laboratory in Pasadena, Calif., began doing routine risk evaluations of potentially menacing objects. 除此之外，義大利比薩大學(xué)和美國加州帕沙第納噴射推進(jìn)實(shí)驗室的研究團隊，也開(kāi)始定期對可能造成威脅的物體進(jìn)行評估。
