tractor beam

短语

牵引波束

词形变化

tractor beams 复数 tractor beams

释义与例句

n.
  1. 1.

    A device-generated beam used to attract other objects from a distance.

    牵引波束

    牵引光束

    媒体

词源

Possibly a shortening of attractor beam; note however the broader meaning of tractor (“machinery that pulls something”). Coined by American science fiction author E. E. Smith in 1931 in his novel Spacehounds of IPC, first serialized in Amazing Stories.

来源：wiktionary