种差异

The results were as follows: 1 There were 7 133 trees, belonging to 23 species and 18 genera and 13 families, and their average DBH, crown and height were respectively 27.59 cm, 4.10 m and 6.94 m. In general their average crown was relative small. 2 S, H (Shannon-Wiener index), and D of biodiversity index were small, and there were the obvious difference in those indexes among different streets, which suggested that there were certain monotone of the tree species and structure layer. 3 The dominant species mainly consisted of evergreen trees that were Ficus virens var. sublanveolata, Ficus benjamina, Roystonea regia, Terminalia hainanensis, T.

结果表明：1梅州城区行道树共有13科18属23种7133株，其平均胸径、平均冠幅、平均树高分别为27.59cm，4.10m，6.94m，总体上看，平均冠幅偏小；2物种丰富度指数S、Shannon-Wiener指数H和Simpson指数D偏小且各道路间差异明显，说明各道路行道树存在一定程度的物种单一性、层次的单调性；3梅州市城区行道树优势树种是大叶榕、垂榕、大王椰子，次优势种为海南榄仁、阿珍榄仁、阴香，它们是梅州城市街道绿化的好树种。

Attenuatus and Sinonovacula constricta were 0.0937 (with 16S rRNA gene) and 0.1596 respectively. However, genetic distances between the two Solen species and C.

四种蛏类线粒体16S rRNA和COI基因在不同种间其明显的多态性差异，证实了16S rRNA和COI基因序列均普遍适用于蛏类种及以上阶元的系统学遗传多样性分析。

Contents of TOC, TN, and OP in Spartina alterniflora marshes are higher than those in other ecological zones.

植被对潮滩湿地中碳、氮、磷的分布有着重要影响，3种物质在互花米草、盐蒿和芦苇中的含量差别不是很大，因此潮滩植被对沉积物中上述3种物质的贡献差别主要是由不同植被的生物量和其所处环境的沉积动力差异造成的。

Among them,Spermophilus dauricus was diurnal animal,and a long activity interval for avoiding strong sunlight at noon was observed.Microtus maximowiczii was active all day along,and its activity intensity by day and by night was similar,which may be a result of its adaptation to the habitat and feeding environment.

结果表明，达乌尔黄鼠为昼行性鼠种，中午时段出现明显的活动间歇期以避开强烈的日晒；莫氏田鼠为昼夜活动型鼠种，日夜活动强度差异不显著，与其生活于草滩底部营食草根的生活方式相适应。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no ob...

结果：6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异；气孔表现出典型旱生植物的特征，略下陷，气孔保卫细胞被厚的角质层覆盖，并形成突起状角质唇状物；气孔大小、形状在种之间无明显区别；叶表面、茎表面气孔均属于无规则型，但形状明显不同，前者主要呈长方形或六边形，后者为窄条形或哑铃形。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no obvious morphological differences in stoma shape and size.

结果：6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异；气孔表现出典型旱生植物的特征，略下陷，气孔保卫细胞被厚的角质层覆盖，并形成突起状角质唇状物；气孔大小、形状在种之间无明显区别；叶表面、茎表面气孔均属于无规则型，但形状明显不同，前者主要呈长方形或六边形，后者为窄条形或哑铃形。

objective:to determine different cultivars of fructus trichosanthis in shandong, and explore their genetic relationships.methods: sds-polyacrylamide gel eletrophoresis was employed to analyze the seed protein of different cultivars and wild plant of fructus trichosanthis from shandong and trichosanthes hubehensis, and the finger-prints were established.results:there were many common bands among different cultivars and wild plant of fructus trichosanthis, but t.

目的：鉴定山东产瓜蒌的不同农家品种，并探讨它们的亲缘关系。方法：利用垂直平板聚丙烯酰胺凝胶电泳技术，对山东产瓜蒌的不同农家品种、野生种及湖北栝楼进行种子蛋白电泳分析，并绘制指纹图谱。结果：山东产瓜蒌不同农家品种和野生种种子的蛋白电泳图谱具有多条共有带，而与湖北栝楼图谱差异显著。

With regard to the current society, much hubbub in the European Union ban on the use of four kinds of children's toys, plasticizers, Jiangnan University, and Dr. LG Chemical in two epoxy esters, briefed the meeting on high molecular weight plasticizers, citrate butyl ester, such as trimellitic several environment-friendly non-toxic plasticizer that can be replaced ethylhexyl phthalate, ethylhexyl adipate, whether it is synthetic process, the source of raw materials are not a problem, but there are differences in price, but into the large-scale production, the price will be decreased substantially.

关于目前社会上闹得沸沸扬扬的欧盟禁止在儿童玩具中使用四种增塑剂，江南大学和LG化学的两位博士在会上介绍了环氧酯类高相对分子质量增塑剂、柠檬酸三丁酯、偏苯三酸酯等几种无毒环保型增塑剂，认为完全可以取代邻苯二甲酸乙基己酯、己二酸乙基己酯，无论是合成工艺、原料来源都不成问题，只是在价格上还有些差异，但进人大规模生产后，价格会有较大幅度下降。

Materials and Methods The triphasic dynamic enhanced CT findings of 52 patients with renal cell carcinoma were reviewed.

资料与方法回顾性分析52例肾癌患者的三期动态CT扫描资料，对经手术病理证实的透明细胞癌、乳头状癌、嫌色细胞癌3种肾癌亚型图像进行双盲法对比分析，比较肿瘤的大小、强化程度与模式（均匀、不均匀及主要周边强化）、有无钙化、出血、坏死与囊变、肿瘤扩散及淋巴结转移等情况，同时结合患者的性别和年龄，分析3种亚型肾癌之间的影像学差异。

Methods Both sealing management and open management are adopted and compared in the checking time and the unwounded rate in one month before and after using the two methods.

选择封存式管理和开放式管理两种模式，并观察比较两种模式管理方式前后1个月在清点时间和手术方舱内物品完好率方面的差异。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！