...tics School of Physics & Material Science 1.2.2 δ函数的性质(properties of Delta function) 1．筛选性质(Sifting Property) • 设函数 在点 连续，则 ) , ( y x f ) , ( 0 0 y x ) , ( ) , ( ) , ( 0 0 0 0 y x f dxdy y y x ...
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短梗霉多糖具有巨大的经济价值，本文综述了短梗霉多糖的性质，在食品中的应用，生产菌种的诱变筛选， 发酵和提纯工艺。
Pullulan has great economic value, this paper summarized its properties, application in food, the mutating and screening of yield strains, fermentation and purifying process.
本论文进行了低温果胶酶产生菌的筛选，并对菌种的产酶条件，低温果胶酶的酶学性质，分离纯化及动力学常数进行了研究。
Screened of strain producing cold adapted pectinase and studied on the condition of producing enzyme, characterization of cold adapted pectinase, purification and kinetic constant in this paper.
施用经筛选确定的两种改良剂，可有效遏制土壤继续向苏打化发展，降低土壤碱性，改善土壤理化性质，提高土壤肥力，进而可实现水稻增产的目的。
Using the two assured modifying agent can hold back the sodic soil reduce alkalescence of soil increase physicochemical property of soil thereby it can achieve increasing production on rice.
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