size of pipeline

• 大小管

size of pipeline的用法和样例：

例句

1. Although methods to separate metallic tubes from semiconducting ones have been developed, no such technique for sorting nanotubes by size was available until now.
   虽然分离两种碳管的技术已开发出来，但是根据碳管大小来分类的技术一直未有所闻。