Beadsize in a range from several nanometers to hundreds of micrometers are commercially available.
尺寸范围从几纳米到几百微米的珠粒在市场上都有存在。
2
The stores will purchase a large amount of each type and size of bead at a lower price from wholesale and then pass on part of the savings to the customer.
这里的珠宝店从批发商那里以较低的价格大量购进各种款型和规格的珠子，然后让利于消费者。
3
Since then the researchers have reduced the bead 's size to about 250 micrometres.