1. Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter. 纳米晶体,也被称为量子点,是一种直径只有百万分之一毫米的半导体粒子。
2. Most ash particles are normally 50-100 microns (millionths of a metre) across. 通常,大多数颗粒的直径在50至100微米(米的百万分之一)之间。
3. Natural starch particles are roughly 30 microns or millionths of a meter wide. 天然淀粉粒子的体积大约是30微米,也就是几百万分之一米。
4. The trigger system also registers the location of particles to millionths of a metre. 触发系统也能以百万分之一米的精度记录粒子的位置。
5. Reservoirs have made each day eight millionths of a second faster than it was forty years ago! 水库的建造使得地球的转速比起四十年前快了每天百万分之八秒!