In a vehicle for uneven ground operation in which rear wheels are covered from above with respective rear fenders and respective mud guards attached to the rear fenders. The method includes receiving the seismic data acquired at two or more sensors on a towed marine survey and regularizing the received seismic data into a spatial domain. A channel region, which is configured to allow charged carriers to selectively flow between the source and drain regions during operation of the device, has differing widths under the gate electrode. The three through holes on the peripheral surface of the valve core can respectively be communicated with the inlet passage of the valve body.