To explore mechanical scent detection,a research institute has developed a synthetic nose wiich can,it believed,detect scents in vapours at a ratio of one particle to a million.

• 为了探索用机器测定气味的途径，有一个研究所研制成功了一种人造鼻子，据认为，这种仪器能够测出蒸发的气体中含量为百万分之一的各种气味。