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This dissertation studied the overcompensatory responses of cotton,Gossipium hirsutum L. plants to leaf loss, square loss and cell sap lossand the changes in some physiological and biochemical contents with timein the case of overcompensation. The artificial defoliation, early squareremoval and aphis colonization were used as three types of simulated ornatural herbivory. The target of this study is to elucidate thephysiological mechanism of cotton plant overcompensation for insectherbivory.

本文以棉花为实验材料,采用人工去除棉花一部分叶片、花蕾及接种棉蚜的方法,分别模拟昆虫食叶、食蕾及吸汁为害等三种为害方式,研究棉花对于失叶、失蕾及损失细胞汁液所产生的超补偿作用,及一些生理生化代谢随棉花发育时间进程变化的情形,以期较为系统地从多个方面阐明棉花对于虫害超补偿作用的生理学机制。

Even before he left office, a majority of Russians, from Kaliningrad to Kamchatka, despised him, partly on account of the raging inflation, unpaid salaries and oligarchic larceny of his rule, but even more for the shame many thought he brought on Russia through his clownish drunkenness.

在叶利钦执政期间就有大部分的俄罗斯人--从加里宁格勒到堪察加--反对他的政策,部分原因是当时大规模的通货膨胀,工资拖欠和金融寡头的垄断,但有更多人认为叶利钦小丑似的丑态给俄罗斯带来了更大的羞辱。

The effects of freezing on the fermentation and speed of infusion of congou black tea was studied.Congou black tea from the fresh and withering tea leaves was performed as follows: deep freezing at -17 ℃ for 2 h,then thawing,rolling,fermenting and drying.

为了使茶多酚氧化酶以可溶形式从完整细胞或组织结构中释放出来,并保持其活性和稳定性,催化多酚类氧化,通常要将茶鲜叶在一定介质中进行充分的细胞破碎,释放出细胞内含物。

By 23rd March 2004, there have been 883 records about mtDNA of Chrysomelidae in the data bank of NCBI, but the record of cytb is 0. cytb is the protein-coding gene and known most clearly in mtDNA. Its often used to study Diptera but never to study the phylogeny of Chrysomelidae.

截至2004年3月23日,在NCBI数据库中,有关叶甲科线粒体基因记录共有883条,但线粒体细胞色素b基因为0记录。cytb基因是一种编码蛋白的基因,是目前了解的最清楚的线粒体基因之一,多用于研究双翅目昆虫,却未曾用于研究叶甲科的系统学问题。

A set of complex Morlet wavelet are applied on projection slice of each direction to decompose each projection into several frequency channels,the average and variance extracted are computed in each frequency channel,and then linear regression model is employed to computer realationship feature between frequency channels.1-D DFT is applied to features and the amplitudes of Fourier coefficient are selected as features,then the extracted features are rotation invariant.

该算法是将一定大小的图像进行二维傅里叶变换;其次在变换后的图像中央选择一个圆盘区域,并在方向[0°,180°]内进行等间隔角度频率抽样,实现方向分解,使用一组复Morlet小波对每个方向上的映射切片进行小波变换,从而实现多通道频率分解;在各个频率通道中计算均值和方差作为特征,并利用线性回归模型计算频率通道之间的关系特征;将特征沿方向进行一维傅里叶变换并取其幅值,从而得到旋转不变性特征。

But activation induced in the frontal and parietal lobes were different.For example,we found that the left gyrus frontalis superior /medius were activated only by theChinese stimuli,while the right gyrus frontalis inferior,the supplementary motorarea as well as the 1obulus parietalis superior on both sides were activated only by theEnglish stimuli.

中、英文刺激在左侧颞叶中后部及相邻的梭状回激活的脑区非常相似,该脑区可能与语义信息的存储有关。2)在额叶脑区,中文激活了左侧额上/中回,英文激活了右侧额下回和补充运动区的某些脑区。3)在顶叶脑区,英文激活了双侧顶叶,而中文没有激活该脑区。4)与中文刺激相比,右脑更多地参与了英文刺激的加工。

Five polymorphic primers with good, clear bands were got, screening fromseventy-five ISSR primers. These five pairs of primers were used to amplificaterespectively the genomic DNA of 66 different Pterocarya stenoptera individuals and atotal of 45 bands were amplified with 43 polymorphic bands and percentage ofpolymorphic bands 95.6%.

2从75条ISSR引物中筛选出5条多态性好、谱带清晰的引物,用这5条引物对66个枫杨叶样的基因组DNA进行了PCR扩增,共得到45条带,其中多态性带43条,多态性百分率为95.6%。

Simulations of forced response of mistuned bladed disks with non-linear dry friction damping were performed.

摘要基于谐波平衡法,提出一种可用于分析含有非线性摩擦阻尼叶盘振动响应的多谐波法,对含有非线性干摩擦阻尼的失谐叶盘系统的受迫响应进行仿真计算。

An efficient multi-harmonic method is proposed for studying the effects of mistuning on resonant features of bladed disks with blade-to-blade dry friction damping.

贺尔铭 ,王红建提出一种高效的多谐波分析方法,以用于研究失谐对带有叶间干摩擦阻尼的叶盘系统共振特性的影响规律。

Stems 18-100(-160) cm tall, well-branched above, densely gray villous on lower part, mixed above with short glandular hairs, often with raised lines decurrent from margins of petioles. Leaves subsessile or lower ones with petioles 1-3 mm; cauline blade lanceolate-elliptic to narrowly lanceolate or oblong-lanceolate, 3-12 × 0.5-2.5 cm, both surfaces villous, base usually rounded, margin denticulate with 15-60 teeth per side, apex subacute.

茎18-100(-160)厘米高,在上面的多分枝,叶近无柄或下部的具叶柄1-3毫米;茎生叶披针形椭圆的到狭披针形或者长圆状披针形, 3-12 * 0.5-2.5 两面,厘米具长柔毛,基部通常圆形,边缘具小齿具齿每边,近尖的先端。

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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。