We must protect primary farmland, keep the area sown to grain stable, improve the structure of grain varieties grown and increase the per unit area yield of grain.
要保护好基本农田，稳定粮食播种面积，优化粮食品种结构，着力提高粮食单产。
The other way to think about it is divergence is the source rate, it is the amount of fluid that is being inserted into the system, that is being pumped into the system per unit time per unit area.
另外一个理解方法是，散度是源头的“冒出率”，它是流体往系统输入的量，也就是单位时间内，单位面积新冒出的流体。
The bone mineral density (BMD) means the bony mineral quantity per unit area, which is an important index reflecting the metabolic status of the skeleton of human being.
骨密度是指骨单位面积所含的骨矿物量，它是反映人体骨骼代谢状况的一项重要指标。
We will effectively keep the area planted with grain crops stable, focus on increasing the yield per unit area and optimizing the variety mix, and increase the country's grain production capacity.
我们要切实稳定种植面积，着力提高单产，优化品种结构，推进全国新增粮食生产能力建设。
Ways of improving crop yield per unit area and the countermeasures.
提高作物单产的途径与对策。
There is potential for increasing the yield per unit area on the existing cultivated land.
提高现有耕地单位面积产量有潜力。
Fuel load is measured by the amount of available fuel per unit area, usually tons per acre.
可燃物负荷是测量每块地区可得燃料的数量，通常是每英亩的吨数。
The sharp increase of transistors per unit area takes a challenge to the reliability of NOC.
单位面积晶体管的急剧增多，给NOC可靠性带来了挑战。
Number of positive neurons of unit area refers to the positive neuron counts in each square millimeter.
单位面积阳性神经元数即每平方毫米面积中所含阳性神经元数量。
The number of panicles per unit area was the most important yield components in determining final yield.
单位面积小穗数是决定最终产量最重要的产量构成因素。
Because a concentrator can be used to improve the energy density in a unit area, it can reduce the dispersion of solar energy.
采用聚光器可提高太阳照射在单位面积上的能量密度，从而克服太阳能分散性的缺点。
A new conception, average powder density defined as the powder quantity clad on unit area of substrate surface has been put for ward.
提出了粉末分布密度这一新概念，即同步送粉激光熔覆时基体单位面积上分布的覆层粉末质量。
And it was more significant to achieve higher yields by increasing grain number per spike than by enhancing spike number per unit area.
通过增加穗粒数来实现高产比增加单位面积穗数意义更大。
Because of the diminishing opportunity to expand cultivated land, researches have been mostly focused on the rise of yield per unit area.
由于扩大耕地面积的可能性越来越小，研究已主要集中于提高单位面积产量。
It was found that the oxygen concentration on carbon black surface is proportional to the ozone supplied per unit area of carbon black surface.
研究表明，碳黑的表面含氧量与提供给单位碳黑表面的臭氧量成正比。
The bolls per unit area of cotton leafy shoots retained at low density could reach the same level as cotton leafy shoots removed at normal density.
低密度下留叶枝单位面积成铃可以达到高密度下不留叶枝的水平。
The maximum yield of corn kernel and straw crude protein in unit area is critical factor to determine the optimum harvesting maturity stage of corn.
单位面积上玉米子实和秸秆粗蛋白最大产量，是确定玉米最适收获时期的关键因素。
An important method of increasing rice yield per unit area is to improve the rice-planting mechanization lever and use advanced planting technology.
提高水稻单产的一项重要措施是提高水稻种植机械化水平，即采用先进的种植技术。
The fracture energy GF of concrete is one basic material characteristic, representing the energy necessary to create a unit area of fracture surface.
混凝土断裂能G _ F是材料的一个基本性能，表示扩展单位裂缝面所需要的能量。
Sound intensity is the sound wave intensity in sound field, which equals sound energy through the unit area perpendicular to the energy flow direction.
声强就是声场中的声波强度，它等于通过与能流方向垂直的单位面积上的声能量。
A key difference is that this algorithm does not give the same value at the sampling point but gives the same average value in unit area of each pixel.
此算法的关键不同点在于不是让算法结果在采样点的值等于原采样值，而是在一个象素大小的单位面积上得到的平均值等于原采样值。
Areal rainfall is average rainfall of the unit area within a certain region and be able to reflect the situation of rainfall in the region objectively.
面雨量是指某区域范围内单位面积的平均降雨量，能够比较客观地反映该区域内的降雨情况。
The total dislocation length per unit volume of material, alternately, the number of dislocations that intersect a unit area of a random surface section.
在单位体积材料中包含位错的长度，或者说在材料内部任意单位截面上位错线的根数。
The relationship between quantity characteristic and the size of clone of Puccinellia Tenuiflora clone population at flowering stage sampled by unit area.
通过单位面积取样调查，定量地分析了开花期星星草无性系种群的数量特征及其与无性系大小之间的关系。
Four components contribute to rice grain yield including the panicles per unit area, the number of spikelets, the percentage of, and the weight of ripe grains.
四个水稻籽粒产量构成因素为单位面积穗数、小穗数、成熟籽粒百分数和成熟籽粒重量。
Four components contribute to rice grain yield including the panicles per unit area, the number of spikelets, the percentage of, and the weight of ripe grains.
四个水稻籽粒产量构成因素为单位面积穗数、小穗数、成熟籽粒百分数和成熟籽粒重量。
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