正问题采用双倒易边界元法求解，该法避免了传统边界元法需进行区域积分的缺点，仅需纯边界积分计算。
The direct problem was solved by DRBEM, which eliminated the drawback of domain integral for classical boundary element method and resulted in pure boundary integral calculation.
针对纯文本文档在传输过程中易受到攻击的特点，提出了一种基于文本图像的纯文本自适应水印算法。
Aiming at the character of the text document being attacked in transmission, an adaptive watermarking algorithm for the text was proposed based on binary image in this paper.
方法具有标样制备简单、消耗纯稀土量少、标准样片易保存、制样成本低等优点。
This method is characterized as it is low cost, economic and simple in standards preparation, and standards can be easily preserved.
纯生物提取，不含易破坏果面物质和化学添加剂，对作物叶面和果面安全。
Pure biological extraction, do not contain easy-damage fruit surface material and chemical additive, safe to the leaf surface of crop and the fruit surface.
进一步采用高纯浓缩技术，使其形成小分子营养团，养分含量高，易被作物吸收利用。
The high-purity concentration technology is further applied to form micro molecule groups with high nutrient content, which are easy to be absorbed and utilized by the crops.
根据相切接触条件用纯解析的方法，易理解，计算简单。
This paper presented a pure analytical method is rath er easy to be understood, and easy to calucate.
根据相切接触条件用纯解析的方法，易理解，计算简单。
This paper presented a pure analytical method is rath er easy to be understood, and easy to calucate.
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