下凹式绿地是一种生态型的雨水渗透设施，目前还没有相关设计规范。

Low elevation greenbelt is an ecological facility of rainwater infiltration, but its design method is not standardized.

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多变量分析法运用r型因子分析来判断品种生态型的基本特征和可变特征。

Multivariate analysis is to use R-typer factor to judge the basic characters and variable natures of ecotypes of wheat varieties.

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扎龙湿地位于黑龙江省齐齐哈尔市东南，是我国最大的珍稀鸟类和湿地生态型的国家级自然保护区。

Zalong marsh is situated in the southeast of Qigiraer city in China. It is a biggest national natural protection area for rare bird and marsh.

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