hand operating knapsack sprayer的意思|示意

手动背负式喷雾器 hand operated vertical hydraulic jack 手动立式液压千斤顶 hand operating knapsack sprayer 手动背负式喷雾器 hand organ 手风琴 ..

手动违负式喷子 ... hand operated vertical hydraulic jack手动立式液压千斤顶 hand operating knapsack sprayer手动违负式喷子 hand organ手风琴 ...