检验时“务要从实”，同时尚需了解被害人生前的社会关系，经济状况，要充分掌握真凭实据。

"Tests" works from the real, "while his victims still needs to understand the social relations, economic conditions, to take full advantage of evidence."

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本文采用平均虫口密度、拥挤度和被害株率作为标准地的指标，对杨树蛀干害虫的危害状况作动态分析。

Dynamic analysis of poplar stem borer was done with population density, crowded level and percentage of damaged trees on sample plots.

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