| 摘要 |
The system comprises a linkage arrangement between a spray boom and carrying vehicle, including a pair of first links 11, 12 connected to respective levers 15, 16 which, in turn, are connected by a second link 21 in a symmetrical relationship. By this system the spray boom remains generally parallel to a horizontal or sloping ground surface and the linkage system absorbs transitory shocks resulting from ground surface irregularities. |
