黑杨是什么意思_黑杨用英语怎么说_黑杨的翻译_黑杨翻译成_黑杨的中文意思_黑杨怎么读,黑杨的读音,黑杨的用法,黑杨的例句

By determination and theory, actual consumption of Populus simon ii x nigra was analysed and studied.

通过观测和理论推导, 分析研究了小黑杨幼龄林对土壤水的实际消耗量.

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This article describes the anatomical features of leaves of seventeen species of Aigeiros and Cathay Poplars.

本文描述了黑杨派和青杨派的17种杨树叶片的解剖构造,它们分属两种类型:等面叶和异面叶.

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