noun
vactrain; vacuum tube train
A proposed high-speed train that travels through a vacuum or low-pressure tube to reduce air resistance.
真空チューブ列車は、理論上は時速1000キロ以上で走行できるとされる。
A vacuum tube train is theoretically said to be able to travel at over 1000 km/h.
Compound of 真空 (vacuum), チューブ (tube), and 列車 (train). A direct translation of the English term 'vacuum tube train' or 'vactrain'.