摘要
通过理论计算，找出了气力喷播机喷筒摆动的最佳频率，使漏播与重播面积之和为最小，满足了４ＢＱＤ—４０型气力喷播机的工作要求。
Through theoritical calculation,we found the best swinging frequency for the Jet-tube of 4BQD-40 Air Spray-sower.Adding area of overlaping part and missing part were minimized.It satisfy the work requirment for 4BQD—40 Air Spray—sower.
