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1.birch of western United States resembling the paper birch but having brownish bark.
美国西部的一种桦树,类似于纸皮桦,但是树皮棕色。收藏指正
2.We found that birch bark could serve as paper.
我们发现桦树皮可以作纸用。收藏指正
3.In this paper,the feature spectra of spectral reflectance of 50 cases Munsell color cards and 50 cases birch leaves are abstracted by ICA and PCA separately.
文章分别使用ICA和PCA对50例Munsell色卡的光谱反射比和50例桦树叶的光谱反射比进行特征光谱的提取。收藏指正
4.In this paper we use geostatistical theory and methods, to study the degree, composition, scale and pattern of spatial heterogeneity in old growth forest of korean pine( Pinus koraiensis ), spruce( Picea koraiensis ), fir( Abies nephrolepis ), birch( Betula costata ) and linden( Tilia amurensis ) in Northeastern China.
采用地统计学理论和方法 ,通过空间异质性特征和比较研究了我国东北红松老龄林中主要树种 ,即红松 (Pinus koraiensis)、云杉(Picea koraiensis)、冷杉 (Abies nephrolepis)、枫桦 (Betula costata)和紫椴 (Tilia amurensis)的空间异质性程度、空间异质性组成、尺度和格局问题。收藏指正
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