解决了原用滚筒鸭嘴式穴播机的撕膜、错位问题。
The problem of tearing film and dislocation in the hill seeder by the duck mouth roll was solved.
推荐的鸭嘴式饮水器和滚球式饮水器给出于表五。
Recommendations for the use of bite drinkers and bowls are shown in Table 5.
本文主要从两个方面对覆膜穴播机具进行分析：一是鸭嘴式成穴器的成穴机理；二是外槽轮式排种器的分析。
The test mostly analyse the film mulching hill-drop planter from two aspects: One is mechanism of duck-mouth type punching-opener, One is analyse of metering device .
应用推荐