种特征

The structure and 5-HT immunoreactivity in the brain and suboesophageal ganglion of three beetle s, Ambrostoma quadriimpressum, Henosepilachna vigintioctomaculata and Oxycetonia jucunda, were first studied by means of colophony-paraffin embedding serial section technique and strepteavidin-peroxidase immunohistochemical method.

采用树脂石蜡组织包埋连续切片技术，结合免疫组化链霉菌抗生物素蛋白-过氧化物酶染色法，首次对三种甲虫(榆紫叶甲、小青花金龟、马铃薯瓢虫)的脑进行了详细观察研究，分析了三种甲虫脑组织结构特征，初步构建了三种甲虫脑内5-HT抗原系统免疫组化反应模式。

The structure and 5-HT immunoreactivity in the brain and suboesophageal ganglion of three beetles, Ambrostoma quadriimpressum, Henosepilachna vigintioctomaculata and Oxycetonia jucunda, were first studied by means of colophony-paraffin embedding serial section technique and strepteavidin-peroxidase immunohistochemical method. The results showed that the brains of these three taxonomically closely related beetles were remarkably different in composition and size.

采用树脂石蜡组织包埋连续切片技术，结合免疫组化链霉菌抗生物素蛋白-过氧化物酶染色法，首次对三种甲虫(榆紫叶甲、小青花金龟、马铃薯瓢虫)的脑进行了详细观察研究，分析了三种甲虫脑组织结构特征，初步构建了三种甲虫脑内5-HT抗原系统免疫组化反应模式。

The results show that the construction of the railway has an obvious effect on the warm steppe,but the characteristics of community,such as the coverage,ecological dominance and species richness of communities have been improved after its natural restoration,and some species,such as Elymus nutans,Aconitum gymnandrum and Thermopsis lanceolata,play an important role in the restoration communities.An assistant measure taken by human beings will benefit to the restoration.There is no any evidence of exotic invading plants in the restoration of the warm steppe in the study area.

结果显示，青藏铁路修筑过程对铁路两侧一定区域的温性草原有较大影响，但随着受影响区域植被的自然恢复，群落盖度、生态优势度和物种多样性等反应群落特征的指标都有一定程度的改善，一些在原生植被中很少出现或伴生种在恢复后的群落中有可能成为群落的优势种或建群种，如露蕊乌头和鹅绒委陵菜等；人为辅助措施将有利于受损植被的恢复；修筑铁路过程中受到影响的温性草原其恢复过程中尚未出现外来入侵植物。

Presents the microstructure evolution in aluminum a nd copper after deformation by cold rolling in the strain range of 10 to 50%red uction using TEM and points out three types of dislocation structures are typica l and two of them are common for both materials and these two common types are f ound in non-cube grains and can be distinguished by crystallographic orientatio n of dislocation boundaries in the grains and the third type of structure is obs erved in cube grains, and concludes that grain orientation is important in deter mining the structure type but some other metallurgical parameters also have a ro le to play.

采用TEM对冷轧多晶铜与多晶铝的形变显微组织演变进行了对比研究。结果发现：多晶铜及多晶铝形变显微组织中均含有三类典型的位错结构类型，其中的两种结构特征在两种材料中是相似的，这两种类型结构存在于非立方取向晶粒，可通过晶粒中位错边界的晶体学取向加以区别，另一类型结构存在于立方取向晶粒；晶粒的晶体学取向决定了其形变显微组织类型，但其它冶金学因素对显微组织也有影响。

A catalyst for decomposing an organic halide, characterized as comprising a water-insoluble vanadyl sulfate or as being a composite catalyst comprising the vanadyl sulfate and a specific oxide and a specific sulfate.

一种分解有机卤化物的催化剂，其特征在于包括水不溶的硫酸氧钒或者是包括硫酸氧钒和一种特定的氧化物和一种特定的硫酸盐的复合催化剂。

All of us have a duty to try our best to judge fairly and without fear or favour, otherwise a breed can quickly degenerate and lose important breed type, conformation and movement features.

我们所有人都努力在公平合理的评审狗狗，没有任何害怕和取悦，否则一种犬种会很快的退化堕落，失去最重要的犬种的标准，构造和动态特征。

Different parts of twenty dominant plant species in five plantation communities on the subtropical hilly lands in Heshan of Gunagdong as well as the litters from three of the five plantation communities were sampled, and their gross caloric value and ash content were measured by using a PARR-1281 oxygen bomb calorimeter and a muffle furnace.

从广东鹤山南亚热带丘陵5种人工林群落中采集20种主要植物器官及3种群落凋落叶样品，利用PARR-1281氧弹热量计和马福炉分别测定样品的干质量热值和灰分含量，再计算去灰分热值；按器官、个体和生长型等比较分析植物的热值和灰分特征。

The differences of zymograms were significant between three blackfly species and each species had its own special zymogram. The main band among intraspecific individuals or between the larvae and pupae was alike, however, other enzyme bands were different.

结果 3蚋种的EST同工酶酶谱共显示10条酶带，种间存在明显差异，具有各自的特征性酶谱，种内个体之间、幼虫与蛹之间酶谱主带相同，非主带略有差异。

The guard cells were covered with heavy cuticle and sunken stomata, which were the typical characteristics of xerophytes.

麻黄属植物气孔的类型及特征比较固定和保守，气孔的大小、形状仅在种内有变异，种间差异较小，分种的价值不大，但在植物分类上具有重要的鉴定价值。

First, the stations'timing process and the slot aligning are discussed. Second, the dissertation propose a resource request random access method based on feedback. The performances of this method are analyzed. Third, proceed from the considerations of the MAC protocol for the HFC system, a QOS-oriental scheduling algorithm for the MAC protocol based on dynamic TDMA is proposed. Simulation results show that the performance of this algorithm is better than that of the first come first service. Forth, two contention resolution algorithms ----p-persistent CRA and tree CRA, which are usually adopted in the HFC system, are summarized. The delay and characteristic are compared. At last, the dissertation introduces the function implementation of the MAC layer based on COM21 UPSTREAMS.

首先，讨论了基站的同步进程和时隙同步的实现；然后，本文提出了一种带反馈模块的资源申请信号随机接入方法，并对其进行性能分析；然后，从HFC系统的MAC协议出发，提出了一种用于基于动态TDMA技术的MAC协议的业务安排算法，计算机仿真结果表明其性能优于先到先服务法的性能；然后概述了常用于HFC系统的两种冲突解决算法——p-坚持冲突解决算法和树型冲突解决算法，比较两者的时延性能与特征；最后，介绍了基于COM21 UPSTREAMS协议的MAC层功能实现，给出了硬件框图和照片。

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！