density 考研GRE四级六级

Generally, the FD treatment has decreased the densities of natural enemies and saprophagous insects .

覆膜旱作田天敌及腐食者密度低于灌溉田。

Or the universe might even recollapse if dark energy density falls to a negative value.

当然宇宙也有可能因为暗能量密度降为负值，而再度塌陷。

Easy to operate, store jerrican accretion,reduce the labor density.

操作方便，贮油桶油量增大，减少操作者劳动密度。

Measuring the bone density of mandibular angle and coxofemoral region with dual energy X-ray absorptiometer(DXA).

采用双能X线吸收测量仪(DXA，骨密度仪)，测量右侧髋部与左侧下颌角的骨矿物密度。

The constraint condition for the strain energy density function of incompressible hyperelasticity is proposed.

通过对各种有限元方法的分析比较，适当修改了已有的应变能密度函数的形式使之更适合数值计算。

In muscular layer and adventitia, the significant increase of the products was found in the anoestrum,and the density of the products was a little bit weaker in the proestrum than that in the estrum.

肌层和子宫外膜中，动情期深，动情后期浅，动情间期表达量明显回升，动情前期比动情期稍浅。

At the proximal and the distal ends of the nerve suture, the density of neurilemma cells in the unit area and the area size of the regenerated nerve fibers were observed and measured.

于神经缝合口近、远端检测神经鞘细胞密度和再生神经纤维面积的观察。

On the level distribution, the density of seed was higher in mesoslope and lowslope.On the vertical distribution, the number of seed took on a decreasing trend with the depth of soil increased.

种子密度水平分布上以中坡和下坡较高，在垂直分布上随土壤深度加深呈现减少的趋势。

As for the lung glandular cancer, the metastatic tumor to the brain shows a low density and sack-like low density under flat scanning.There is no obvious reinforcement and relatively slight hydroncus.

肺腺癌的脑转移瘤平扫表现为低密度及囊状低密度,强化不明显,水肿相对较轻.

The lowest cell density was found in duodenum.The origin of distributive mode of argyrophil cells in the digestive tract of Takydromus wolteri might be related to its habitat and feeding habit.

且嗜银细胞形态多样，主要有锥体形、椭圆形等广泛分布于上皮细胞基部、上皮细胞之间、腺泡上皮及腺泡之间，且多数嗜银细胞有明显的突起。

The aquafarm was the most important waterbird habitat in Hangzhou, and the West Lake and the pond area were also important in maintaining the diversity and density of waterbirds in Hangzhou.

水产养殖场是杭州市 水乌重要的栖息地类型，西湖和水荡对于维持杭州市水鸟的数量和多样性也具有重要的作用.

Abstract： Based on twice survey data in the adjacent waters of Zhanjiang port of autumn and winter in 2005, the species composition and stock density of necton were analyzed.

摘 要： 根据2005年湛江港邻近水域秋冬2季渔业资源调查的资料，分析和研究了该水域游泳生物的种类组成及其资源密度的分布。

The effect of the mesh density, the change of dynamic plasticity property of mild steel with strain rate and the spotweld mechanical property on the simulation results is analyzed.

分析了网格密度、身用低碳钢材料塑性特性随应变的变化及焊点力学特性因素对仿真结果的影响。

For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.

当焊缝区域底片黑度变化超过透度计处黑度时，应在该处另加透度计。

The arc pressure distribution is in concordance with the hyperbolical curve and the current density distribution is in concordance with the Guass distribution under the presented experiment condition.

实验结果表明，在本试验条件下，电弧压力分布符合双面指数曲线分布，电流密度分布符合高斯分布规律。

On the other hand, floating types have density much smaller than 1, which means that there are real numbers unrepresented between consecutive floating values (i.e. there are gaps).

另一方面，浮点类型的密度远小于1，这意味在相邻的浮点值之间存在无法表示的实数(即有一定间隙)。

RESULTS The CTfeathures of ossifying fibroma inparanasal sinus were similar torotundity or unregular single high density lump in sinus, partarea of low density, integrity bone involucrum around it.

结果鼻窦骨化纤维瘤的CT表现为鼻窦内单发类圆形或不规则性高密度肿块,部分区域可见低密度影,其周边出现完整骨性包壳,呈膨胀性生长,周边组织受压变形但分界清楚。

Compared with the D-larvae and the umbo-larvae, the densities of the post larvae and the settled spats show rapid reductions at the end of the development process.

与D形幼虫与壳顶幼虫相比，壳顶后期幼虫及附稚贝的密度大幅下降。

The increase of cellulous fiber in the hybrid fiber can result in the increase of optimum asphalt content, the reduction of density, air voids and Marshall stability.

同时随混杂纤维体系中木质素纤维比例的增加，沥青混合料的佳沥青用量增加，密度下降，空隙和马歇尔稳定度呈减小趋势。

The deep formation has a high degree of hardness and abrasivity;the bit type selection is difficult and the ROP is low especially under the high density mud.

深部井段地层的硬度高、研磨性强，钻头选型困难，特别是在高密度条件下机械钻低。