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1·This clump of paper birch trunks was backlit by a blaze of reds and yellows.

这一丛纸桦树树干的背光是一片红黄相间的火焰。

2·How were paper birch and Douglas fir communicating?

纸皮桦和花旗松到底是怎么交流的呢？

3·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。

4·Paper birch is the best of the hardwood, often running in bursting strength up to 80% and in tearing strength up to 90% of spruce pulp.

白桦通常是比较适合的阔叶木，其浆料的撕裂度可以达到云杉浆的80%，耐破度可以达到云杉浆的90%。

5·We found that birch bark could serve as paper.

我们发现桦树皮可以作纸用。

6·Results show that paper bulk, bending stiffness, and opacity can be improved significantly by both aspen and birch HYPs.

结果表明，杨木hyp和桦木hyp可显著提高纸张松厚度、挺度及不透明度。

7·This paper described the antiseptic method of birch.

本文叙述了桦木的方法。

8·In this paper, the properties of both White Birch branch material and the board have been investigated.

以白桦枝桠材为原料，在测定材质的基础上对制板工艺进行研究，提出了制板的优化工艺参数。

9·The present paper deals with stability of the birch forest.

本文论述了桦林的稳定性。

10·This paper focused on the exploration of the relations between wettability of wood surface and the bonding problem in the condition of high-moisture birch wood being used.

木材的润湿性关系到木材或木制品的胶接质量，与木材加工工艺有着紧密的联系。