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Receptors of plant cells response to extracellular stimulus, they are phosphated and activate MAPKKKs, MAPKKs and MAPKs in turn, and regulate the related gene expression.

植物细胞内受体接受外界刺激信号，然后依次磷酸化激活MAPKKKs、MAPKKs和MAPKs，并影响相关基因表达。

Recent work at HKUST had successfully developed a n ew lightweight, ultra-low density filter material based on photoactive

下降。常规做法是利用传统材料和方法（例如：过滤，吸附和氧化）依次处理，其程序繁琐且效率低下。

The resultsshowed that one electron was photochemically transfered from rich electron part inside the C〓 derivatives to C〓 football. On the other hand,two step PET took place between C〓 and additional electron donor Et〓N, and so C〓anion as well as C〓 dianion could be detected in C〓/ Et〓N system.

结果表明：C〓衍生物分子内的富电子部分与C〓区域间发生分子内光诱导的一步单电子转移过程，对比而言，C〓分子与外加给体Et〓N间可相继发生两步光诱导电子转移反应，依次生成C〓和C〓阴离子自由基。

By using 4-chloro-5-nitro phthalimide as raw material and through aminoysis, reduction, cyclization and hydrolysis, end-produce benzimidazole-5,6-diformic acid is prepared.

本发明公开了一种苯并咪唑－5，6－二甲酸的制备方法。该方法是以4－氯－5－硝基邻苯二甲酰亚胺为原料，依次经过氨解、还原、环合、水解反应过程，制得最终产品苯并咪唑－5，6－二甲酸。

The results showed that the phytophagous insects in the spruce forest in Qilian Mountains exhibited obvious vertival stratification structure. According to the amounty of species of each structure, it could be divided into 6 insect communities, namely the insects community of the shrub and herbage (928 species), of the soil and root (780 species), of the tender end and needle (117 species), of the stem phloem and xylem (66 species), of the branch thin end twig shin (38 species), of the blossom and seed and fruit (14 species).

结果表明祁连山区青海云杉林中植食性昆虫具有明显的垂直分层结构，根据林分的垂直结构和昆虫寄生、取食树木组织部位可划分为6个群落，其种类由多到少依次为灌木和草本层昆虫群落（928种），土壤与根部昆虫群落（约780种），嫩梢与针叶昆虫群落（117种），树干韧皮部与木质部昆虫群落（66种）、枝梢与嫩皮昆虫群落（38种）、花与种实昆虫群落（14种）。

The natural enemies group, neutral arthropod group and phytophagy arthropod group of the two sub-systems were respectively analyzed and have found that all types of arthropods of the two sub-systems can be divided into three different types of groups. The first group is which living in two habitats and the species current is few impacted by the changes of habitats; The second group is which can living in two habitats in turn ,but can transfer to another in the time the habitats was deeply disturbed ;The third one can only living in one habitats and can make the another habitats as a temporary habitats.

两个亚系统的天敌类群、中性节肢动物类群、植食性节肢动物类群分别进行分析发现两个亚系统的各类群节肢动物均可划分为三种不同类型，第一种为栖居于两种生境且物种流受生境变化影响较小类群；第二种为可依次栖居于两个不同生境，生境的变化对其物种流产生较大影响；第三种为栖居于某一单一生境，但可将另一系统作为某一虫态的临时栖境。

The frequency of particular amino acids in signal peptides by statistical approach was 48.54% for hydrophobic, 18.67% for uncharged, 24.54% for negative and 8.00% for positive amino acids. The most frequent amino acid was alanine, and the least was isoleucine. Three classes of signal peptides were found in the genome of P. syringae pv. tomato, 501 ORFs belong to secretary signal peptides, 36 ORFs belong to twin-arginine signal peptides, and 15 ORFs belong to lipoprotein signal peptides. Type IV pilin signal peptide and bacteriocins and pheronones signal peptide was not found in the genome.

同时，对组成信号肽的氨基酸种类作了系统的分析，发现组成信号肽的氨基酸中非极性氨基酸占48.54%，极性氨基酸占18.67%，带负电荷氨基酸占24.54%，带正电荷氨基酸仅占8.00%，出现最多的3种氨基酸依次为亮氨酸、丙氨酸和丝氨酸，最少的氨基酸是异亮氨酸，在切割位点－1端的氨基酸中83.21%均为丙氨酸，在切割位点后3位的氨基酸中最多的氨基酸也是丙氨酸。

The synthetic conditions of 4,4 dimethyl 3 oxopentanenitrile prepared sequentially from acetone through pinacol , pinacol one and α chloro pinacol one were investigated.

对以丙酮为原料、先依次制得片呐醇、片呐酮、α氯代片呐酮、最后由α氯代片呐酮与NaCN反应制得 4，4 二甲基 3 氧戊腈最后两步的反应条件进行了研究。

Their developed priority is as follows: Vernicia fordii, Sapium sebiferum, Camellia oleifera and Jatropha curcas as well as Pistacia chinensis etc, after the system being used for the sustainable development evaluation of twenty-five species oil plants in Three Gorges.

运用该体系对三峡库区25种油料植物进行可持续发展评价，得到了这些油料植物目前依次优先发展的排序是：油桐、乌桕、油茶、麻疯树、黄连木等。

VOA的SpeciaI English节目一般历时半小时,依次为10分钟的News,接着为5分钟的Environment Report、A griculture Report、Science Report、Development Report、People in the News、Words and Their Stories,最后是15分钟的 This ls America、Science in The News、Ex ploration、The Making of a Nation

上述各种节目中，以News为最难，因为它覆盖范围广，政治、经济、军事、文化和科技等等，用词量比其他节目多，理解时需要各种背景知识。但是如果连续听，听懂前一天的内容后很利于听懂以后同一事件的消息。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。