底特律

底 = 广 + 氐 : The space station's old concrete foundation has been broken up, and Dorothy Gale wants to send the remnants of the foundation back to the base on earth using parachutes.

特 = 寺 + 牛 : Tecumseh (t) has a very special (特) mount: In contrast to the other Indians he rides a bull (牛). Moreover, the bull is so special (特) that it meditates in front of the Buddhist shrine (寺) in the elevator's bathroom (e4) together with Tecumseh.

律 = 彳 + 聿 : Loki (lü) wants to prove the inverse square law (律) of electrostatics in the space station's bathroom (Ø4). He repeatedly rubs a decorator's brush (聿) against the soles of his black sneakers (彳) and thereby transfers electrons from the shoe soles to the brush. Now that both are charged, they will attract each other according to the inverse square law (律). To measure the amplitude, Loki uses Hook's law (律): when the black sneaker is attracted to the brush it will bend the bristles of the brush until the two forces cancel each out.