If you till, wait until the soil is warm and dry enough. If the soil stays together in a ball, it is too wet to till.
耕作要等到土壤充分温暖干燥。如果土壤还黏成球状，意味着土壤太湿不能耕作。
Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.
根据物料及排矿方式，可选择干式球磨机和湿式格子型球磨机。
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