跪求翻译，CE机械指令中的几句话，死活也理解不了……

这是对CE机械指令中半成品机械中合并声明书的一些介绍的内容。翻译如下：

- "an undertaking to transmit, in response to a reasoned request by the national authorities, relevant information on the partly completed machinery"：承诺应对国家机构的合理要求，提供有关半成品机械的相关信息。
- "a statement that the partly completed machinery must not be put into service until the final machinery into which it is to be incorporated has been declared in conformity with the provisions of this directive, where appropriate"：声明半成品机械在最终要集成的机械符合本指令的规定之前，不能投入使用（必要时）。

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