During 1981-1987, the fixed position observation was conducted in different patterns of multiple cropping system of paddy fields.
1981年至1987年，对稻田不同多熟种植方式进行了定位观察。
Most blanks are fixed into position with a screw, but different cases use different methods.
大多数毛坯到用螺丝固定的位置，但不同情况下使用不同的方法。
The utility model can be fixed in any position of an upright rod according to different operating requirements. The utility model has the advantages of convenient use, firm fixation, etc.
本实用新型可根据各种不同使用要求在立杆上任何位置加以固定，具有使用方便，固定牢固等优点。
应用推荐