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It is difficult to lift up or pull out the bucket without the handle; because it requires more power to do it. Thus, inserting an inside concave handle on the top of the bucket can minimize the power to lift up of pull out the bucket.
South China Agricultural University
Guangzhou in China, China
South China Agricultural University
Guangzhou in China, China
Yongming Yuan
South China Agricultural University
Guangzhou in China, China
Xiaojun Mai
South China Agricultural University
Guangzhou in China, China
Chaojie Chen
South China Agricultural University
Guangzhou in China, China
Xiaobo Chen