查询词典 yield gap

Density has great effect on yield of root tuber, but its exhibition on colony and individual plant is different. It was shown that there was a negative correlation between the individual yield and density, while a positive correlation between the colony yield and density.

结论密度对白首乌产量性状影响较大，但在群体和个体上表现不同，与个体块根产量呈负相关，与群体根的生物产量呈正相关。

But the rhizosphere effects on spring-sown maize and summer-sown maize were quit different. At level of N1 and N2, rhizosphere effects had decreased the dry matter, grain yield, crud protein yield and crud fibre yield, while increased the grain starch content and the ratio of amylopectin to amylase.

两个氮水平下，根际作用对春玉米生物产量、籽粒产量、粗蛋白产量、粗纤维产量表现负效应，而对籽粒淀粉含量、直链淀粉含量、支链淀粉含量及支/直则为正效应。

Reaction of citric acid with paraformaldehyde gave anhydromethylene citric acid with a yield of 63%;the reaction of compound with acetic anhydride gave the corresponding anhydride with a yield of 87%;the esterification of compound with lauryl alcohol gave anhydrocitric acid monoester with a yield of 76%.

将等浓度的柠檬酸和多聚甲醛加热，反应生成柠檬酸缩醛环酯，产率为63%；与乙酸酐反应得到相应的柠檬酸酐，产率为87%；与月桂醇酯化，生成产物，产率为76%；用二氧六环做溶剂，将与等浓度的碱进行开环反应，生成柠檬酸月桂醇单酯，产率为83%。

The method of the research in the paper is impellent,and the basal research course is the following.Firstly,the author uses the Theil coefficient and Gini coefficient to analyze the regional economic gap,and decomposes the structure in China.At the same time,the author tests theσconvergence,the absoluteβconvergence,the conditionalβconvergence and the club convergence.Secondly, the author analyzes the forming reason and mechanism of the regional economic gap in China.

本文研究过程中采取逐步深入的推进方法，其基本研究思路是：首先，使用基尼系数和泰勒指数对中国地区经济发展差距的历史演变轨迹进行了分析，并对其形成结构进行了分解，同时对中国经济增长的σ收敛、绝对β收敛、条件β收敛和"俱乐部"收敛进行了检验，以此为基础形成了对中国地区经济发展差距的全面了解；其次，以新古典增长理论和新增长理论为基础对中国地区经济发展差距的形成机制进行了分析；再次，以FDI非均衡分布为视角对中国地区经济发展差距的形成机制进行了解释；最后，提出了本文的政策建议。

Nonbicarbonate and intracellular buffers contribute to the buffering of newly formed acid so that the actual drop in [HCO3-] is usually less than the increase in the anion gap due to a simple elevated-gap metabolic acidosis.

非碳酸氢盐和细胞内缓冲液有利于缓冲新形成的酸，以致实际[HCO3-]的下降低于单纯性AG增高型代谢性酸中毒引起的阴离子间隙的增加。

Nonbicarbonate and intracellular buffers contribute to the buffering of newly form ed acid so that the actual drop in [HCO3-] is usually less than the increase in the anion gap due to a simple elevated-gap metabolic acidosis.

非碳酸氢盐和细胞内缓冲液有利于缓冲新形成的酸，以致实际[HCO3-]的下降低于单纯性AG增高型代谢性酸中毒引起的阴离子间隙的增加。

We have to admit the existence of the gap, but the gap is still very great.

我们不得不承认存在的差距，但差距仍然很大。

The results show that the angle of incidence has effect on band-gap width and central wavelength of band gap.

理论计算和实验表明，入射角对光子带隙的宽度和带隙中心波长均有影响。

The animal pole process punched in to the follicle and made a gap on it, and then the whole oocyte got out through this gap. Two forces may response to ovulation: the hydration of jelly space and contraction of follicle. Two MTOC are anchored beneath the animal pole process.

卵母细胞通过动物极突起连接到滤泡上，在脱滤泡作用开始时，卵母细胞动物极突起刺入并穿过滤泡膜，使得滤泡膜表面形成一个缺口，然后整个卵母细胞开始从缺口处挤出。

The contact area ratio of the asperities between the gap decreasing while the rolling speed increasing results in decreasing of the shear stress between the gap and positive damping of friction.

由辊缝动力学分析发现，随着轧制速度的提高，辊缝间粗糙微峰的接触区域比减小，导致辊缝间的剪切应力降低，由此产生的摩擦正阻尼降低。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。