Landspeeders use a repulsion plate to skim a planet's gravitational field, simulating the effect of flight, and enabling it to perform low altitude manoeuvres.
兰德速攻艇使用反重力板去利用行星的重力场来悬空浮起，以模拟飞行的效果并使其能够在较低高度下机巧地行动。
Considering the background of massless neutrino, probes into the effect of the background field on the gravitational field of a global cosmic string outside the core.
考虑静质量为零的中微子背景，探讨背景场对整体宇宙弦核外引力场的影响。
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