The ultimate strength of doubler plate is studied.

研究了加强版的极限强度。

There is also a doubler feature at no additional cost.

还有一个额外的功能，在没有成本加倍。

Doubler: a code generator for unit tests, stubs and wrappers.

并线机：单位测试、残余部分和封皮的一台编码发生器。

The doubler structure is distinctive, simple and easy to realize.

该倍频器具有结构新颖、简单，腔体加工容易等特点。

The homogeneity and stability ofthe KTP doubler were also checked.

此外，本实验对KTP倍频器的稳定性也做了检验。