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瑞典研制成功一种全自动的电子植树机,每小时可栽植1800株树苗。驾驶人员根据土壤条件和树苗的株距,操纵机器一次经过就可完
Sweden successfully developed a fully automatic electronic tree planting machine that can plant 1800 saplings per hour. According to the soil conditions and saplings of the driver spacing, manipulation of the machine can be finished at one time