At the foot of the Himalayas in the Indian state of Uttaranchal, forests of regal, old oak form a natural watershed for two major rivers that feed the plain below.
在位于喜马拉雅山脚下的印度uttaranchal邦，壮观、古老的橡树林为流入低处平原的两条大河形成了一道自然的分水岭。
Lucene can index only plain text documents, so we need a way to extract the plain text from a rich document format like those above and feed it into Lucene.
Lucene只能为纯文本文档建立索引，因此我们需要找到一种方法将纯文本从上面提到的那些富文档格式的文档中提取出来，然后将其提供给Lucene。
Therefore, the copper plain tube in HP heaters can be replaced with the steel spirally fluted tube for the requisition of having no copper in boiler feed water system.
因此，可以采用钢质螺旋槽管替代高压加热器中的铜光滑管，实现锅炉给水系统无铜化运行的要求。
Therefore, the copper plain tube in HP heaters can be replaced with the steel spirally fluted tube for the requisition of having no copper in boiler feed water system.
因此，可以采用钢质螺旋槽管替代高压加热器中的铜光滑管，实现锅炉给水系统无铜化运行的要求。
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