查询词典 gross yield

Using the imbalance index of urbanization, taking 14 cities in Gansu Province as the basic unit, the differences between urbanization and social and economic indicators such as land area, population, cultivated land, grain yield, gross output of farming, gross output of industry and GDP and so on in 2004 were discussed. The trend of the imbalance index of urbanization responding to those indicators from 1995 to 2004 were analyzed.

本文利用城镇化不平衡指数，以甘肃省14个市州为基本单元，在时间断面上，探讨了2004年城镇化与土地面积、总人口、耕地面积、粮食产量、农业总产值、工业总产值和国内生产总值等社会经济指标之间的不平衡性；在时间序列上，分析了1995-2004年相对于这些指标的城镇化不平衡指数变动趋势。

Ha, the irrigated farmland rate to the total arable land increased 5. 3 times and the total number of drilled wells raised 19. 6 times. At the same time, multi-cropping index increased by 33％. The percentages of winter wheat and maize sown area went up and those of millet, potato sown area which consume less water in their lifetime went down in the past 50 years. The gross grain yield increased 1923. 3× 10〓ton and the yield of per hectare increased 5082kg during the past 50 years.

在种植业内部，小麦、玉米播种面积在粮食作物中的比例不断提高，而耐旱的谷子、高粱、薯类等杂粮作物播种面积不断减少，形成典型的小麦、玉米两熟种植制度。50年内本区粮食产量增加了1923.3×10〓t，粮食单产提高了5082kg/hm〓。

The annual yield of the Fund is the yield to maturity of underlying bonds in gross in the portfolio.

基金的年息率指组合内债券之到期收益率。

The optimum reaction conditions are as follows: diphenylmethanethiol : methyl chloroacetate is 1:1.5, and the reaction carried out at 100℃ for 4 h, 2- acetamide can be carried out in the room temperature for 20 h, the yield of 2- acetamide was 76%, hydrogen dioxide: 2- acetamide is 1:1, and the reaction carried out at 60℃ for 3 h, the yield of modafinil was 79%, the total yield of reaction can be reached 48%.

研究表明，采用氯乙酸甲酯作为醚化试剂，反应时间4h，反应温度100℃，二苯甲硫醇：氯乙酸甲酯=1：1.5，室温下氨解反应20h，二苯甲硫乙酰胺收率76%；采用过氧化氢作为氧化试剂，反应时间3h，反应温度60℃，过氧化氢：二苯甲硫乙酰胺=1：l，莫达非尼收率79%，反应总收率可达48%。

The result showed that the best time for sampling was 7 to 14 days after the first bud flowering on the main anthotaxy. The capacity of embryoid production varied significantly in different genotypes. Among them, twelve genotypes yield embryos successfully, which the rate could reach 71%. Genotype 102 was an ideal material for embryoid induction, and the frequency could reach 32.78 embryos per bud. Genotype that with a highest yield produced 546 times as many embryos as that with a lowest yield. The embryoid induction ability of normal bolting genotypes were higher than easy bolting and hard bolting genotypes.

结果表明：在秋冬季日光温室内，供试植株主花序第一朵花开后第7~14天取样，即初花期是最佳取样时期；不同基因型间小孢子胚胎发生能力差异很大，在接种的17个基因型中，有12个诱导出胚，诱导成功率71%；其中102号产胚量最高，达到32.78个／蕾；在已产胚材料中，产胚量最高的基因型是产胚量最低的基因型的546倍；较易抽薹型材料的产胚能力大于易抽薹型和不易抽薹型。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

The average heterosis of spike number per plant and 1 000-grain-weight were high and obviously related to yield heterosis at 0. 01 and 0. 05 level, respectively; the average yield heterosis of F1 hybrids between common wheat and club wheat was 77. 19%(ranged from-2. 18% to 143. 42%), the average heterosis of spike number per plant and spike grain number were high and both was also obviously related to yield heterosis at 0. 01 level.

结果发现：小麦种间杂种在产量上具有明显的杂种优势，其中斯卑尔脱小麦与普通小麦所配的30个种间杂交组合产量杂种优势平均为109.24%(43.14%～187.96%)，单株穗数及千粒重平均优势较大且与产量优势的相关分别达极显著水平和显著水平；密穗小麦与普通小麦所配的30个种间杂种的杂种优势为77.19%(-2.18%～143.42%)，单株穗数和主穗粒数优势较大且与产量优势的相关均达极显著水平。

The result of ways of enzyme is thatγ-amylase had no impact on diosgein yield and draff yield.The ways of bathing did not work on diosgenin yield.

原料酸水解液用石灰水先中和后再水洗的方法与直接水洗对薯蓣皂甙元得率没有显著影响。

Results and Discussion Flavin 2 was synthesized from 3,4-diaminobenzoic acid (3) and alloxane monohydrate (4) in good yield according to standard procedures (Scheme 1).9 The first step afforded flavin 5 in quantitative yield, in 1:1 ratio of the 7- and 8-hydroxycarbonyl regioisomers, and was subsequently methylated by methyl iodide to form flavin 6 in 86% yield, in a 3:2 ratio of the 7- and 8-regioisomers.

结果与讨论黄素二是合成3，4 -二氨基安息香的酸（ 3 ）和氧嘧啶水合物（ 4 ）在良好的收益率根据标准程序（计划1） 0.9的第一步，给予黄素五，在定量产量，在1：1的比例， 7 -8 -羟基羰基 regioisomers ，并随后甲基甲基碘形成黄素6月在86 ％的产量，在一个3：2的比例， 7 -和8 regioisomers 。

Teflubenzuron was synthesized from 2,4-difluoronitrobenzene and 2,6-dichlobenil as starting reagent through six-step reaction with the yield of 75.3%.3,5-Dichloro-2,4-difluoroaniline was synthesized by chlorination,reduction reaction from 2,4-difluoronitrobenzene,the yield was 84.5%;2,6-difluorobenzamide with the yield of 87.7% was synthesized by fluoridation and hydrolysis from 2,6-dichlobenil.

以2，4-二氟硝基苯和2，6-二氯苯腈为起始原料，经过6步反应合成伏虫隆，总收率为75.3%。以2，4-二氟硝基苯为原料，经过氯化、还原反应合成3，5-二氯-2，4-二氟苯胺，产率为84.5%；以2，6-二氯苯腈为原料，经过氟化和水解，制得2，6-二氟苯甲酰胺，产率为87.7%；将Ⅱ与二碳酸酯酰化，合成2，6-二氟苯甲酰异氰酸酯，产率为91.3%；Ⅲ与Ⅰ加成，得到杀虫剂伏虫隆，产率为95%。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。