At present, the detection methods based on PCR are the main methods for fruit tree viruses, and many fruit tree viruses have been detected by PCR.

基于PCR技术的检测方法是目前果树病毒检测的主要方法，许多果树病毒的PCR检测体系已经建立。

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All kinds of different methods based on rooted-tree multicast key distribution schemes make efforts to minimize the user key storage while providing efficient member deletion.

基于生成树组播钥匙分配方案的各种方法在提供有效的用户删除方法的同时努力将用户钥匙存储最小化。

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And analyses the methods to verify the process model's rationality which is based on overlay tree algorithm and reduction. then the two methods are used to verity the process model of the company.

接着详细分析了基于覆盖树算法和化简方法的过程模型的合理性验证，分别利用这两种方法对本文建立的过程模型进行了合理性验证。

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