| 1. | Small hoist arranges rope device automatically design
棉花排种器的现状和发展趋势 |
| 2. | Experimental study on a new type seed meter
新型气压式精密排种器的试验研究 |
| 3. | Design of a new type double - row vacuum seed meter
新型高速气吸式双条精密排种器设计研究 |
| 4. | Experimental study on 2qxp - 1 type suction - seed metering device
1型气吸式排种器的初步试验 |
| 5. | Study on row sowing device with spiral sheave
螺旋槽轮式排种器的研究 |
| 6. | 3 . bench testing on the new precision metering device
三、对所研制的排种器进行了试验研究。 |
| 7. | Status about onion planting and its harvesting machines
精密播种技术及磁吸滚筒式穴盘排种器的研究 |
| 8. | Computer simulation of seed - injuring on wheat precision seedmeter
小麦精密排种器伤种的计算机模拟 |
| 9. | Status quo and developing direction of cottonseed metering device
棉花播种机排种器的现状和发展趋势 |
| 10. | Design and experiment of four rows seed - metering device for vegetable
针孔气力式蔬菜排种器的设计与试验 |
