Growth and yield of wheat and corn under shelterbelt of Chinese jujube and poplar were studied.
本试验对比研究了小麦和玉米在枣树和杨树2种农田防护林带作用下的生长状况和产量.
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本研究用松木和杨木为原料,对生产模压托盘的关键工艺参数进行了研究.
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Brought up in town, the boy finds it difficult to separate a poplar from a willow.
那男孩是在城里长大的, 所以觉得很难区别杨树和柳树.
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They will spring up like grass in meadow , like poplar trees by flowing streams.
他们要发生在草中, 像溪水旁的柳树.
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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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There are abundance wilding plant resources including cypress, poplar, spruce etc.
山中野生植物资源丰富,盛产云杉、柏 、 杨等木材.
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冰核细菌溃疡病流行的时间动态以理查德生长模型为最优生长模型.
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与安徽长江滩地杨树人工林生物量和养分积累>>相似的文献.
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Last year in Maine, midnight raiders hacked down more than 3,000 experimental poplar trees.
去年,美国缅因州一处白杨树实验林遭“夜半突袭队”闯入,砍倒了三千多株树.
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Poplar ( Populus deltoides ) veneers were used to make plywood for concrete forms.
摘要采用浸胶玻璃纤维布强化方法制造杨木胶合板模板.
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