yield的例句（yield在句子中的用法）

• Severe water stress inhibited photosynthetic quantum yield, carboxylation efficiency, electron transport rate, and photophosphorylation activity. 叶肉细胞光合能力的降低可能是由于光合量子效率 、 化效率 、 合电子传递速率及光合磷酸化活力的下降所致.
• The seed bourgeon, seedling growth, crop yield and heavy metals contents were influenced by contaminated soil. 土壤重金属污染影响了种子萌发 、 幼苗生长 、 作物产量及体内重金属含量,探讨了污染土壤的酶学评价方法.
• Any of several plants, such as the bloodroot, whose roots yield a reddish dye. '紫'.''''.'草'.''属植物如血根''.'草'. ''等根部可以提炼红色染料的植物.
• Dry oxidation of benzoin with air under microwave irradiation gave benzil in excellent yield. 研究了微波辐射下干法氧化苯偶姻生成苯偶酰的反应.
• Yield spreads against Germany, the euro zone's benchmark economy, could also widen. 相对于欧元区基准经济体德国的收益率利差也可能扩大.
• The yield of crops or the profit of cattle sale usually fell bellow his estimate. 作物收成或出售牲口的利润,往往低于他的估计.
• The yield of the product N - BAA was 92 % under above conditions. 在最佳条件下,N-BAA的收率可达92%.
• Azone is synthesized with caprolactam and 1 - bromododecane by phase transfer catalysis, the yield is > 70 %. 以己内酰胺、澳代十二烷为原抖,采用相转移催化法合成氮酮, 收率达到70%以上.
• It avails to realize high and superhigh yield of spring wheat. 从而提出“三优”栽培法——优区、优种、优措施,有利实现春小麦高产和超高产.
• Under optimum conditions, yield of anthraquinone reached 82.5 %. 在优化的实验条件下, 获得了82.5%的收率.
• The recycle ratio anodynon is 84 % above the yield level of the same industry in domestic. 氯乙烷收率可达84%以上,远远高于国内同行业的收率水平.
• P - methoxybenzeneacetonitrile was prepared in 34.8 % yield starting from anisole, via chloromethylation, cyanogenation and fractional distillation. 以苯甲醚为原料,经过氯甲基化, 氰化反应后, 通过精馏获得对甲氧基苯乙腈,总收率为34.8%.
• Treatment of 3 - aminopyridine with AFA at room temperature gave 3 - formamidopyridine in 95 % yield. 在室温下 3- 氨基吡啶与甲乙混酸酐反应制得3-酰胺基吡啶,产率为95%.
• Algonquin has the highest crude protein yield, Farmers Treasure and WL - 323 HQ are the second. 粗蛋白产量以阿尔冈金最高, 农宝、WL 323HQ 位居其次.
• In the alcoholysis, we study on yield with different bases, and improve reaction conditions. 醇解反应中, 研究了以不同碱作为催化剂时对产品收率的影响, 优化了反应条件.
• Animal growth or product yield is the ultimate concern of the agriculturalist. 牲畜的生长或其产品的生产量是农学家最关心的问题.
• Theoretically sludge yield is nil for the extended aeration process. 对延时曝气法而言,理论上污泥生成量应为零.
• A simple and convenient method for preparing adrenochrome is presented and the yield reaches over 30 %. 提出了一种制备高纯度肾上腺素红的简便易行的方法.
• Through nitrosation , hydrogenate reducion, and acylate three steps, the yield surpass 80 % for the diethyl malonate. 收率相对于丙二酸二乙酯达到了80%以上.
• Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05 %. 以苯甲酰氯为原料,经酰化, 还原, 环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%.