Combinations involving at least two large factors (e. g. high threat and high vulnerability) now generate substantially higher risk scores than those with consistently low - or medium-scoring factors.
现在包括至少两大因素(例如高威胁和高弱点)的结合会比那些一贯低分数或中等分数的因素得到更高的风险分数。
B5 as basic medium appended with different concentrations of sucrose, AGAR and different hormone combinations was used to optimize the culture technique for DH line in Brassica napus l.
以B5培养基为基础培养基，添加不同浓度的蔗糖、琼脂及不同激素组合进行试验，对油菜DH系的组培技术进行优化。
Method: MS medium was used as basal medium and ba and NAA were supplemented to find out the optimal hormone combinations for adventitious buds initiation, adventitious bud multiplication and rooting.
方法：以MS培养基为基本培养基，通过研究植物生长物质BA和NAA对丛生芽的分化、丛生芽的增殖和生根的影响找出相应的最佳生长物质组合。
With young stem segment of Euonymus japonicus as explants, callus induction were studied on MS basal medium supplemented with different hormone combinations including BA and NAA, IBA , 2,4-D.
以大叶黄杨的幼茎段为外植体，在添加BA和NAA、IBA、2，4-D不同激素组合的MS培养基上培养，对其愈伤组织进行诱导试验。
Improving the quality of medium indica hybrid rice combinations was restricted by chalky rice rate and chalkiness degree.
垩白粒率和垩白度是中籼杂交稻组合稻米品质提升的主要障碍因子。
There are significant differences in setting rate among different medium hybrid rice combinations.
不同杂交中稻绍合间结实率存在显著差异。
The green shoot-bud regeneration rates of calli were affected by combinations of different auxins in regeneration medium.
分化培养基上不同激素配比也影响其绿苗再生率。
The green shoot-bud regeneration rates of calli were affected by combinations of different auxins in regeneration medium.
分化培养基上不同激素配比也影响其绿苗再生率。
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