查询词典 dense set

Kalanchoe; sunken or protected stomata e.g. marram grass; folding, rolling or repositioning of leaves to reduce sunlight absorption, e.g. marram grass; a dense covering of white reflective spines, e.g. cacti; and the development of a dense hairy leaf covering, e.g. Espeletia.

通过减少水分流失而生存的旱生植物的生存策略包括：落叶，如：墨西哥刺木；分泌蜡质覆盖叶片使气孔器被封闭或堵塞，如：滨草；折叠、卷曲或重新排列叶序而减少对日光的吸收，如：滨草；喜砂草盖白色的可以反射太阳光的刺，如：仙人掌；还可以发展出密毛状叶片铺满全身各处，如： Espeletia 。

Based on the hydrodynamic theory of dense gas-solid flow and the kinetic theory of dense gases proposed by Chapman and Cowling, the kinetic theory of cohesive particles flow and constitutive equations of cohesive particles are established.

目前科学家们对粘附性颗粒的流态化研究主要集中于实验研究，数值模拟研究做的比较少，特别是对传统的双流体模型，如何进一步改进完善，以适应粘附性颗粒的气固两相流动的研究，成为当务之急。

In chemical plant,liquefacient ammonia leaking from refrigeration equipment usually disperse in the air and become dense gas at the beginning.With the air coming into the gas,it will be increasingly close to the air density and become non-dense gas.

化工厂制冷装置发生液氨泄漏，泄漏后形成毒气云团在空气中扩散，初期多形成重气云团，在扩散过程中随着空气的不断卷吸，重气云的密度会越来越接近空气，从而转变为非重气云团。

It is proved that Poisson-stable points are dense in the locally compact phase space X if and only if non-wandering point s are dense in the X.

证明了如果相空间X局部紧，则Poisson稳定点在X中稠与非游荡点在X中稠等价。

As a result of case study in Haidian district, Beijing, the accuracy rate of vegetation fraction estimation by using "dense vegetation model" and "nondense vegetation model" synchronously based on land cove classification is obtained about 75.4%, which is 5.8% higher than that of using "dense vegetation model" only.

根据TM像元为非均一混合像元的特点，提出了基于土地覆盖分类的综合运用"等密度模型"和"非密度模型"计算植被覆盖率的方法，通过对北京市海淀市区的植被覆盖率计算表明，该方法的估算精度可达75.4%，比单纯使用等密度亚像元模型在估算精度上可提高5.8%。

The dissertation includes the work as follows: Firstly, we present a random graph model with spatial reuse for a dense MANET which using directional antennas. The analytic formula of several important performance parameters for the MANET are obtained under the DSR routing protocol, such as the average flooding distance, the probability generating function of the flooding distance, the probability of a flooding route to be symmetrically valid, the average time to find a symmetrically valid route and the cost to successfully route a data packet to its destination. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effcctive in terms of the performance of the dense network with directional antenna, because the bigger is the degree of spatial reuse, the smaller is the average flooding distance.

在定向天线技术的支持下，建立了移动自组网络空间可重用的贝努利随机图模型，获得了DSR路由协议下平均泛洪距离的解析公式和泛洪距离的概率母函数：给出了有效对称路由概率、发现有效路由平均时间、成功路由代价等关键性能参数的解析分析；在网络性能参数定量分析的基础上，对空间可重用和无重用的网络进行了比较分析，结果显示空间重用度增大，则平均泛洪距离、路由发现时延、网络代价减少。

Results It was found that the dense artery sign of MCA existed in the first CT scanning. The dense artery sign of MCA was like a"stick"or"punctiform", and its CT value was over 60 Hu.

对26例一侧大脑中动脉梗死患者的CT 资料进行回顾性分析，所有病例均做了发病早期（1～6h）CT扫描及发病后24h小时CT扫描，均经临床诊断。

Results It was found that the dense artery sign of MCA existed in the first CT scanning. The dense artery sign of MCA was like a"stick"or"punctiform", and its CT value was over 60 Hu. In the second CT scanning (24 hours after the first scan), a big area of low density in the region supplied by MCA was shown.

结果 26例患者发病早期（1～6h）的CT 检查均见一侧大脑中动脉致密动脉征，呈"条状"或"点状"，CT值大于60Hu；发病后24h复查，该侧大脑中动脉血供区均呈大片状低密度影。

Pore structure experiment shows that porosity of high volume fine mineral mixture RPC is about 5%, the pore distribution is uniform and the main pore is small. When the cement content of high volume fine mineral mixture RFC is 300 kg/m^3, its sclerotium hydration products is dense packed by irregular equal Ⅲ style C-S-H gels. The gels are fine, dense, and integrate with the aggregate.

孔结构试验表明，大掺量矿物细粉活性粉末混凝土的孔隙率均在5%左右，孔分布情况很均匀，主要以微小的小孔为主；水泥用量为300 kg/立方公尺的大掺量矿物细粉活性粉末混凝土硬化体水化产物主要由不规则等粒子状的Ⅲ型C-S-H凝胶紧密堆积在一起，凝胶精细、致密，且与骨料融为一体。

He dense inner region consists of high dense fibrils and flocculent vesicles. The primary spermatophore layer and secondary spermatophore layer show positive reaction to PAS.

EM显示：次级精荚壁由内外两层构成，内层致密，由电子密度高的纤丝和絮状泡组成，外层疏松，含有沟形网状结构和不规则的大絮状泡。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

He is one of my favorite actors.

他是我最喜欢的男演员之一。