还是一个句子结构问题

题目

还是一个句子结构问题
This tutorial shows how you can apply the basics of REST and APP within a Web application to transmit resources across HTTP requests and responses using a Java servlet-based system.
using a Java servlet-based system.是修饰哪个?apply 还是 transmit
这里有什么就近原则吗

答案

是apply
This tutorial shows how you can apply the basics of REST and APP within a Web application to transmit resources across HTTP requests and responses using a Java servlet-based system.
TO 后面是定语,USING那句的目的是为了APPLY