This paper applied Grey Relativity Analysis to calculate the relevant coefficient ε i(k) and relevant degree γ i of each characteristic of 14 introduced cultivars (3 species) on the basis of observation, and therefore comprehensively evaluate them (from qualitative analysis to quantitive analysis).
The results of variety test, field demonstration, and field sampling analysis showed that Guiyinxuan 83/3, Xintaitang 20, Qinyin 98/3, Nonglin 8 and Xintaitang 16 were early ripe, high sugar content, high tonnage and good ratoon performance. They are appropriate varieties for early harvesting in October.
The test results of the position of cloth fell in dynamic state, the amount of cloth take-up and warp run-in, the angular rotation of main shaft etc, obtaining from the test system consisting of the photoelectric transformation and microcomputer are introduced, The variation law of the position of cloth fell in dynamic state; the relationship between the warp tension and the position of cloth fell; the relationship between the amount of warp run-in, cloth take-up and the position of cloth fell; and the vari...
Experiments on Introduction and selection of summer-sowing varieties of wheat were conducted in northwest plateau of Hebei with an elevation of 1481.5m in 1994~1995. The results show that the ecological types of strong springness varieties (lines) are suitable summer-sowing ones among the 27 tested spring wheat varieties (lines). These varieties (lines) were sowed during the last 10 days of May and ripened in late August and early September. The main stems of these varieties possess only 6~7 blades. They do...
The effect of the deviations and slants of the joint axes of a plane connecting bar mechanism is considered.The reliability for preventing seisure of a plane connecting bar mechanism caused by the deviations and slants of the joint axes are analyzed.A hinged four bar mechanism is used as an illustrative example to explain the basin concepts of the method.