比较器

The optimeter is widely used to precisely measure external size of workpiece by comparison with a gauge block or standard part.

本仪器是一般是用标准器（如量块）以较法测量件尺寸。

Secondly, the structures of various multicouplers and their matching networks are introduced and discussed, and the design period of broadband matching network in multicoupler is presented in brief.

然后，本文对多种多路耦合器结构方案进行了分析和较，并讨论了匹配设计方法，其中简要讲述了宽带匹配优化设计过程。