They're the cylindrical machines that look like futuristic phone booths, and they use the same basic principles as backscatter scanners.

它们呈圆柱形状，看起来像电话亭，它们的工作原理和反向散射扫描一样。

In the Antico Setificio Fiorentino, Italy's oldest working silk mill, Beatrice Fazzini turns by hand a vertical warper: a cylindrical machine that prepares yarn for weaving.

在意大利最古老的古丝绸铺 Antico Setificio Fiorentino，比阿特丽斯·法兹尼用手转动整经机，这是一种为织造准备纱线的圆柱机。