paper birch

I grew 80 replicates of three species: paper birch, Douglas fir, and western red cedar.

那时我种了三种树，一共80棵：有纸皮桦、花旗松和西部红杉。

How were paper birch and Douglas fir communicating?

纸皮桦和花旗松到底是怎么交流的呢？

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。

The C-13 and C-14 was showing me that paper birch and Douglas fir were in a lively two-way conversation.

碳13和碳14的流向告诉我，纸皮桦和花旗松之间的交流是双向的。

We found that birch bark could serve as paper.

我们发现桦树皮可以作纸用.

This paper uses K-means, BIRCH and CURE respectively to cluster the log CT image data, and analyzes their characters in execution time, quality of clustering and sensitivity to the parameters.

分别用K-means，BIRCH，CURE对原木CT图像数据进行聚类，分析三者在聚类时间、聚类质量以及对参数的敏感程度的特征。