Aspen pulp is the weakest of the commonly used hardwoods strong as spruce.
白杨是常用于生产亚硫酸盐浆强度较差的阔叶木,撕裂度和耐破度分别为云杉浆的50%和60%.
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Groves of elderly aspen tremble in the wind, but no sprouts push up in the understory.
年老的白杨树丛在风中颤动, 下层植被却没有新树苗生长.
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And those aspens have those gold leaves in the Appalachian Trail in the fall.
并且那些白杨木有那些金叶子在阿巴拉契亚足迹在秋天.
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Thecolor of sapwood of Chinese white poplar among trees has significant difference.
毛白杨边材材色株间存在显著差异.
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从三倍体毛白杨-93 ( PopulustomentosaCarr. ) 中分离得到了MDCesAP这 一木质部纤维素合酶基因启动子.
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从白杨树之间我们瞥见摘棉机在地里徐徐前进.
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Objective : To obtain the fragment related to rooting gene of mutant Populus tomentosa.
目的: 克隆芽变毛白杨生根相关基因片段.
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They are white poplars. Though very common in Northwest China, they are no ordinary trees!
那就是白杨树,西北极普通的一种树, 然而实在不是平凡的一种树!
汉英文学 - 散文英译
白杨三倍体速生质优,特别适宜作为短周期纸浆材等工业用材.
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