密度大的

To improve the quality of fuel: ethanol in gasoline motor ethanol is a renewable form of energy, but also is an excellent quality of the gasoline improver.

降低尾气有害排放：汽车有害尾气的排放，特别是在人口密度较大、车流量较大的区域和城市，已成为一种严重的环境污染源。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripple s are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripples are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

Results The main CT features of adrenal neuroblastoma in children included:huge and irregular mass(25 cases),the density is more even(18 cases),calcific

结果：儿童肾上腺神经母细胞瘤的CT主要表现有大的不规则肿块25例，密度较均匀18例，钙化12例，囊变或坏死8例，出血4例，越过中线22例，包绕腹膜后大血管20例，腹膜后淋巴结肿大18例，2例肝转移，8例腹腔积液，2例盆腔转移。

We have measured the 〓for some proton rich nuclei at intermediate energies on RIBLL. A larger enhancementof 〓 for 〓 has been observed than for its neighbors. The anomalous enhancementin the difference factor d for 〓 compared to its neighboring nuclei and the longtail of the proton density distribution extracted from the measured 〓 support theassumption of the proton halo structure in 〓.

我们在RIBLL上实验测量了中能区一些丰质子核在〓靶上的核反应总截面，第一次从反应截面的角度观察到〓的〓有较大的反常增加，同时通过差异因子的分析及从实验数据中提取核子的密度分布得出〓的质子密度分布有很长的尾巴，即得到了〓具有质子晕结构的实验证据。

The results showed that:(1) In COPD group the alveolar walls were broken. The average area of alveolars was 2.46 times as big as the control group, and the average diameter was 1.42 times as compared with the control group. As the diameter of bronchioles was less than 100μm and 100～200μm respectively, the average area of smooth muscle in bronchioles increased to 3.06-fold and 2.13-fold respectively. By electron microscopic, the proportion of Clara cells of respiratory bronchioles in COPD group decreased, the Clara cells were denaturalized, the proportion of Clara cells containing low density secretory granules increased. The airway resistance was 1.84 times while the dynamic compliance was only 70.45% comparing with the control group.

结果表明：(1)光镜下，COPD组大鼠与正常对照组比较，肺泡壁破坏、肺泡腔扩大，平均肺泡面积和平均肺泡直径分别为正常对照组的2.46倍和1.42倍，在直径＜100μm及直径100～200μm的小支气管，COPD组大鼠支气管平滑肌面积分别为正常对照组的3.06倍和2.13倍；电镜下可见，在呼吸性细支气管，Clara细胞占上皮细胞的比例下降，细胞变性，含低电子密度颗粒的Clara细胞比例增加；呼吸功能测定可见COPD组大鼠呼气相气道阻力是正常对照组的1.84倍、动态呼吸系统总顺应性为正常对照组的70.45％。

The results indicated that BaCe0.8Ho0.2O(subscript 3-α) sinters are of single-phase structures of orthorhombic perovskite. In the temperature range of 600~1000℃, the nonstoichiometric materials (x=1.03 and 0.97) have higher conductivities in wet hydrogen and wet air and better performances of hydrogen-air fuel cells than the stoichiometric one (x=1). In this series, BaCe0.8Ho0.2O(subscript 3-α) has the highest conductivities 2.10×10^(-2Scm^(-1) in wet hydrogen, 3.46×10^(-2) Scm^(-1) in wet air, at 1000℃ and the maximum power output density 122 mWcm^(-2 at 1000℃.

结果表明，在600~1000℃温度范围内、湿润氢气和湿润空气气氛中，该系列材料的电导率随温度和钡离子含量的变化均与以该系列材料为固体电解质的氢－空气燃料电池性能随温度和钡离子含量变化的次序一致，即：非化学计量组成材料BaCe0.8Ho0.2O(下标 3-α)(x=1.03， 0.97)具有较化学计量组成材料BaCe0.8Ho0.2O(下标 3-α)(x=1)高的电导率和氢－空气燃料电池输出功率密度，其中BaCe0.8Ho0.2O(下标 3-α)有最高的电导率（1000℃时、在湿润的氢气气氛中：2.10×10^(-2)Scm^(-1)；在湿润的空气气氛中：3.46×l0^(-2)Scm^(-1)）和最大的氢－空气燃料电池输出功率密度（1000℃时：122mWcm^(-2)）。

Originally, superstar refers to stars in big luminosity, big volume and low density.

原指光度大、体积大、密度小的恒星；本文比喻某些方面有杰出成就的伟人。

Since the atoms that make up normal,"solid" matter are mostly empty space, a star made almost entirely of tightly packed neutrons is extraordinarily dense: a fingernail's worth of a neutron star would have a mass of more than a trillion kilograms. A neutron star's density and gravity is second only to a black hole.

确切的说，是直径20km左右的一个超级中子，虽然不过只有一个大中型城市的体积，质量超过1.5倍太阳——译注）由原子组成的普通物质，其&实心&的物质内部其实绝大部分都是空的（大家完全可以用太阳系质量集中在太阳来想象原子内部，当然电子与行星有本质区别——译注），而一颗几乎全部由中子构成的恒星却密度极大：指甲大的一块中子星物质的质量达到万亿吨级，中子星的密度、引力仅次于黑洞。

The distribution of the underground rivers is consistent with the occurrence of the carbonate rocks in Chongqing.

同时利用地下河发育密度和多年平均径流模数，结合各地区多年平均降水量，对重庆市地下河水资源的分布规律进行了分析，得出地下河发育密集地区并不一定就是水资源量大的地区；降水量高的地区也不一定是地下河水资源量大的地区，二者在重庆市存在较大差异。

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。