释义 |
known substance 基本例句 已知物,已知物质 Diamond is the hardest substance known.钻石是〈已知物质〉中最硬者。 But aerogel is able to slow the particles down to a halt within the space of a few dozen microns, and preserve them better than anyknown substance.但是气凝胶能够让这些颗粒减速并最终在几十微米的距离上停下来,比其他任何〈已知物质〉更好的保护它们。 |