plasma-cells
发表于 2025-3-25 03:32:31
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文艺
发表于 2025-3-25 09:49:08
Jiří Matoušek two, . and . Steud., are cultivated. All the rice cultivars grown in Asia, Europe and America are ., whereas many of those cultivated in West Africa are . consists of two distinct land races, Indica and Japonica. Indicas are grown in the humid tropics whereas Japonicas are cultivated in Japan and N
Flavouring
发表于 2025-3-25 13:58:24
Jiří Matoušekd in Pteridophytes (Fernandez ..,1993). This parallel has been drawn in a number of reviews (Dunwell, 1978, 1992) and although the detail will not be repeated here, it is worth drawing attention again to one of these earlier studies in which Hirsch (1975) showed a definite nutritional role of sucros
原谅
发表于 2025-3-25 17:17:31
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钱财
发表于 2025-3-25 20:50:18
Jiří Matoušekd in Pteridophytes (Fernandez ..,1993). This parallel has been drawn in a number of reviews (Dunwell, 1978, 1992) and although the detail will not be repeated here, it is worth drawing attention again to one of these earlier studies in which Hirsch (1975) showed a definite nutritional role of sucros
infelicitous
发表于 2025-3-26 01:19:19
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BOOM
发表于 2025-3-26 06:10:39
populations to obtain genotypes with desirable agronomic traits. The characters of a new cultivar should be: a) high yield, b) resistance to abiotic and biotic stresses, and c) high nutritional value and good baking qualities. These characters are generally encoded by several genes, and only a few p
谷物
发表于 2025-3-26 10:15:17
,Lattices and Minkowski’s Theorem,ex bodies in .. We formulate the simple but beautiful theorem of Minkowski on the existence of a nonzero lattice point in every symmetric convex body of sufficiently large volume. We derive several consequences, concluding with a geometric proof of the famous theorem of Lagrange claiming that every
cognizant
发表于 2025-3-26 16:32:38
Convex Independent Subsets,pe: Every sufficiently large structure of a given type contains a “regular” substructure of a prescribed size. In the forthcoming Erdős-Szekeres theorem (Theorem 3.1.3), the “structure of a given type” is simply a finite set of points in general position in R., and the “regular substructure” is a se
下垂
发表于 2025-3-26 17:09:19
Incidence Problems,he plane. In addition to its mathematical appeal, this problem and its relatives are significant in the analysis of several basic geometric algorithms. In the proofs we encounter number-theoretic arguments, results about graph drawing, the probabilistic method, forbidden subgraphs, and line arrangem