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Despite the fall of its stock caused by technical problem which can be solved in the near future
2者的区别在于：前者是过去分词短语作定语，后者是用which引导的定语从句。

这里的caused by technical problem是过去分词作stock的定语，也可以改成和后半部分一样的定语从句形式(被动含义)，即：Despite the fall of its stock (which is) caused by technical problem

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