small-size part

Much of the time, the size of XML really makes no difference — hard disks are cheap, and the time on the wire might be only a small part of the total time in the process.

很多时候，XML的大小实际上并没有多大影响—硬盘很便宜，而且文件传输用的时间也许只占整个处理时间的一小部分。

However there is a move towards increasing the size of the reserves which traditionally have been only a small part of the British army compared to (for example) the US army.

然而，英国现在打算增加预备役的规模，传统上只构成英国陆军的一小部分，而美国的预备役数量就很多了。

Medical interventional catheter is an important part of interventional apparatus. It has small size and belongs to the minicatheter.

医用介入导管是介入器具的重要组成部分，其尺寸微小，属于微细导管。