Some orchardists have tried to control crown - shape by pruning, disbudding and branch - bending to circumvent the problem.有些种子园工作者曾试用修剪 、 摘芽,弯枝等办法来控制冠形以解决这个问题.In writing an essay one must do a lot of pruning.写文章要下一番剪裁的工...
In writing an essay one must do a lot of pruning.写文章要下一番剪裁的工夫.A sapling needs pruning, a child discipline.小树要砍, 小孩要管.Firms are cutting investment and pruning their product ranges.公司正在减少投资，缩减产品系列。...
梨后代果心大小遗传与组合类型有关,小果心出现的比例从高到低的组合类型依次为:小×小、小×中、大×中.The fruit core size was related to the crossed combinations.低温可有效的延缓果心褐变的发生.The result suggested that low temperature could postpone the appearance of browning.你所要做的就是把菠萝...