North American elm having twigs and young branches with prominent corky projections.
产于北美洲,细枝和幼小分枝上有引人注目的软木突起.
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Vigorous young red elm trees thrust emerald-green crowns through a canopy of waist-high weeds.
生机盎然的小红榆树从齐腰高的杂草从中探出翠绿的花冠.
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Holmes crossed two compatible races of ceratocystis ulmi, the causal agent of Dutch elm disease.
霍姆斯曾把荷兰榆病害的致病因子,长喙壳的两个亲和小种杂交.
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The result shows that hackmatack, koyama spruce and elm have a better capability of detaining dust.
结果显示在所调查树种中滞尘能力方面,杜松、红皮云杉 、 山桃稠李、树锦鸡、榆树滞尘能力较强.
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Deciduous tree style such as maple, oak, elm, dogwood, apple, etc.
落叶类树包括枫 、 橡木 、 榆树 、 茱萸 、 苹果树等等.
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Deciduous tree style such as maple, oak, elm, dogwood, redbud, etc.
落叶类树包括枫 、 橡木 、 榆树 、 茱萸 、 紫荆等等.
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Spring has arrived; the flowers of elm trees are floating down all over the ground.
春天到了, 榆钱花随风飘得满地都是.
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ELM收集顾客提供的关于帐户文件和所有其它形式的信息.
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This paper descithes the effect of vapor treatment on wood stress of oak, elm and ash.
本文描述了汽蒸处理对蒙古柞 、 榆和水曲柳木材应力的影响.试验结果表明,汽蒸处理可使应变转变点向后推迟.
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The villagers have lopped away the biggest of the branches of that elm overhanging the road.
村民们把那棵榆树低垂在公路的最大的枝子砍掉了.
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