密度大的

Because it is necessary for wind speed estimation to consider the variation of air density, a method to implement air density estimation by discrete sampling of the state of DFIG is proposed.

准确的风速估计必须考虑空气密度的变化，给出通过对风机状态的离散采样实现空气密度估计的方法，利用修正后的空气密度对风速进行更为准确的估计，从而得到最优的转速设定，实现风能的最大捕获。

Regionalize by clustering helps improve the prognostic precision of different interpolation method. Concerning complanate hypsography such as plain and hill, the interpolation errors of accumulated temperature don"t have obvious change trends and regularity when the number of meteorological stations increase. Namely, increasing station density can"t effectively ameliorate interpolation error. In the regions where terrain is complex the interpolation errors present degressive trend with the increasing number of meteorological stations.

在平原，低山丘陵等地势平坦的地区误差对站点密度增加的响应不具有明显趋势和规律性，即站点密度的增加对插值误差的改善没有明显效果；在地形复杂，地势起伏大的地区误差随站点密度的增加在一定范围内呈大幅度下降趋势，即插值站点数的变化对插值结果有较显著的影响。

ABSTRACT Polyolefin materials, such as high density polyethylene , linear low density polyethylene and polypropylene have been widely used in a variety of fields because of the combination of excellent chemical and physical properties.

聚烯烃材料如高密度聚乙烯、线性低密度聚乙烯、聚丙烯等具有良好的综合性能，在热塑性塑料中是生产量最大的通用塑料材料，在国民经济中占有重要地位。

As a way of ocean engergy transport, internal waves propagation leads to onflow and sea water mixing and has an effect on the local water exchange, sediment and resuspending.

内波在密度跃层附近生成并传播，伴随着等密度面较大的起伏和较强的流速切变，威胁着水下潜艇的航行安全，对海上石油平台的作业也有较大影响。

The results indicated that there existed significant variation for the density of glandular trichome among different parents and different individuals of F2 generation.

研究结果表明：烤烟腺毛密度在亲本间和杂交组合F2代个体间存在着较大的遗传变异，F2代不同个体腺毛密度的次数分布经卡方测验符合正态分布曲线，说明腺毛密度具有数量性状的遗传特征，其广义遗传率和狭义遗传率分别为83.3%和26.6%。

This paper made a systematic research on Lonicerafulvotomentosa Hsu et S.C. Cheng, which grows well inkarst areas, from its biological characteristics, such asmorphology, growth and physiology. The main conclusions asfollows:(1)From the viewpoint of morphological anatomy, it hastypical xerophyte structures such as well-developed epidermisand tissues that transport water effectively, small leaf area,dense floss under the leaf surface, high stoma density, thesmall opening degree, thick cuticle, well-developed xylem andpalisade tissues, etc. The pollen of L. fulvotomentosa isseems to be spherical, and has 3 grooves, much bulge on theepidermis evenly. The shape of pollen is an important featureon taxonomy. The ripe fruit has from 1 to 18 seeds, some fruitbranch has 135 berry, its diameter is up to 0.8 centimeter.(2)From the viewpoint of growth, L.

本文从形态解剖、生长发育的节律、光合生理特性以及种子萌发生理等生物学特性方面对喀斯特适生经济植物黄褐毛忍冬进行了较为系统的研究，得出以下结论：(1)在形态解剖上，黄褐毛忍冬根茎中含有发育良好的周皮和输导组织，导管密度大，横截面宽，周皮的形成具有节制蒸腾、通气作用和保护组织免受外界环境影响的作用，宽的导管对水分的输导效率高；叶片密被绒毛，面积较小，气孔密度大、开度小，厚的角质层和发育良好的木质部和栅栏组织等是典型的旱生结构；黄褐毛忍冬花粉近球形，具3 孔沟，表面具均匀分布的小刺，刺间具网状纹理。

The density is bigger than that of the water and alcohol, and decreases with the temperature increase.

离子液体的密度比水的密度大，且随温度的升高，密度增大。

Through comprehensive comparison,during the growth from 1 age-degree bamboo to 2 age-degree bamboo,density, mechanical strength(except maximum tensile strength etc.),fraction of bundle sheath,cell wall ratio,crystallinity,cellulose content and lignin content increase rate are the greatest.3age-degree bamboo has higher strength,strength and gravity ratio andcrystallinity are the biggest,fraction of parenchyma is small and insect-resistant.2 degree bamboo has the greatest mechanical strength,but its strength andgravity ratio is not the highest and its crystallinity is lower than 3 age-degreebamboo due to its greatest fraction of parenchyma,loss tangent value is thebiggest.Its creep character is not good and is easily eaten by moth.

通过综合比较，竹材从1度竹到2度竹生长过程中，密度、力学强度、纤维束比量、胞壁率、结晶度、纤维素含量、木质素含量等指标增加幅度是最大的。3度竹强度较高，强重比、结晶度最高，薄壁组织含量较小，相对抗虫蛀，材质最好，适合材用。4度竹结晶度下降引起强度的下降，但薄壁组织组织比量最小，相对最抗虫蛀。2度竹力学强度最大，但是强重比并不是最大，结晶度比3度竹低，由于薄壁组织组织比量最大，内耗值最大，蠕变性能较差，同时相对易遭虫蛀。

The superconductivity of Sc5Co4Si10 is attributed to the large density of state at Fermi level,especially for Sc5Rh4Si10 and Sc5Ir4Si10. The low-temperature specific heat coefficients for Sc5Rh4Si10 and Sc5Ir4Si10 could not fit the expectably transition temperature. This is what we are interested in.

Sc5Co4Si10超导形成的原因为在费米面附近有很大的态密度，因此推测Sc5Rh4Si10 及Sc5Ir4Si10会有更大的态密度，但是Sc5Rh4Si10 及Sc5Ir4Si10藉由量测低温比热所推测出的超导温度却无法和实际超导温度相近，因此这引起了我们的兴趣。

Self-thinning procedure was found be related to site and initial density by analyzing ultimate self-thinning line of larch plantations.

通过对人工落叶松林分最大密度曲线的分析，发现林分自然稀疏过程与立地条件和初植密度有关。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。