本文首先介绍了采砂船监测系统的开发背景以及相关技术，得出研究本课题的重要性和必要性。
Fristly, this article introduces the developed background and key technology, educes the importance and necessarian of this article.
如果这仅仅是一个技术问题，尚可理解，但如果对该研究的紧迫性和重要性缺乏重视，则不可原谅。
It would be understandable if it was just a matter of technology, but the lack of attention paid to the urgency and importance of such research is not excusable.
“改进J2EE技术和. NET间的互操作性”(本系列的第1部分)指出，许多Web服务编程人员忽视了XSD schema设计的重要性。
"Improve interoperability between J2EE technology and. NET" (Part 1 of this series) pointed out that many Web services programmers neglect the importance of the XSD schema design.
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