可以举例解释一下功能需求和用户使用说明的区别吗？
Don't write functional requirements instead of usage scenario text.
一直以来，技术文档写作一般被认为就是与创建技术文档有关的工作，例如撰写用户手册，使用说明还有培训材料。
Technicalwriting has traditionally been associated with the creation of technicaldocumentation such as users' guides, instruction manuals and trainingmaterials.
用户可根据洒水泵使用说明书上的故障排除方法进行维修或更换零配件。
The user can repair or replace the spare parts according to the trouble shooting method of the sprinkling pump.
敬请用户认真阅读卷扬机使用说明书。
注1：为了安装必须取下的部件，即使使用说明中声明用户可取下它，也不认为该部件是可拆卸的。
NOTE 1 If for installation purposes a part has to be removed, this part is not considered to be detachable even if the instructions state that it is to be removed.
对用户提出特殊要求所增加的配置和功能，将以附件的形式，编辑使用说明。
For additional facilities and functions specially requested by customers, we will prepare their instructions in the form of an appendix.
在系统帮助中提供了系统的操作使用说明，方便用户使用。
Have offered the systematic operation operation instructions in system help, help users use.
在系统帮助中提供了系统的操作使用说明，方便用户使用。
Have offered the systematic operation operation instructions in system help, help users use.
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