① The size of the overlapping surfaces of the fan-shaped eccentric blocks at both ends of the same vibration motor must be the same, and the positions of the two pairs of fan-shaped eccentric blocks in the axial direction must be the same. <br>② The size of the overlapping surfaces of the fan-shaped eccentric blocks at both ends of the two vibration motors of the same seed processing vehicle must be the same. <br>③ The direction of rotation of the two vibration motors must be opposite (see Figure 5)
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