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Bamboo variation ofmicrodensity of all age-degree and all height bamboo from bamboo green tobamboo yellow as follows:The downtrend ladder of microdensity the firststage from bamboo green to bamboo yellow is relatively large,normally at theplace 0.35 from bamboo hull(the thickness of from bamboo hull to bambooyellow is 1)micro-density downtrend ladder begin to get smaller,variancerange of microdensity is smaller.When reaching near bamboo yellow area,microdensity reaches its minimum value,and when reaching bamboo yellowsection density increase rapidly,the minimum density of bamboo is only 50% orless of maximum density.Bamboo yellow is comprised of stone cells whichhave thick cell wall,so its density is high,normally 50% to 100% more thanminimum density.Bamboo yellow′s lay thickness is thin,normally the samethickness for all age-degree and all height bamboo,about 0.8mm.From 1 age-degree bamboo to 2 age-degree bamboo during growth,the increase of averagedensity is mainly in bamboo pulp section,from 3 age-degree bamboo to 4 age-degree bamboo,the decrease of average density is mainly decrease in the pulpsection.Same age,same height,the less the density ladder of bamboo radialthickness,the higher the mechanical strength.
所有年龄所有高度的竹材微密度从竹青到竹黄对材性变异规律如下:从竹青到竹黄开始下降梯度较大,一般到相对竹皮距离0.35左右处(整个竹壁厚度为1),竹材微密度下降梯度减小,微密度的变化范围变小,到近竹黄处,微密度达最小值,而后到竹黄部位密度大幅上升,竹材最小密度一般只有最大密度的50%或更低,竹黄由厚壁的石细胞组成,所以密度较大,一般比最小密度增大约50%-100%,厚度较薄,不同年龄不同高度竹材的竹黄厚度相差无几,约在0.8mm左右;竹材从1度竹到2度竹生长过程中,平均密度的增长主要发生在竹肉部分,从3度竹到4度竹生长过程中,平均密度的下降主要发生在竹肉部分,同一年龄同一高度,竹壁厚径向的密度梯度越小,力学强度越高,随着年龄的增大,密度梯度越来越小(1度竹除外),随着高度增加,密度梯度越来越大。
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In training and management we should take the following measures: expanding the contact of schools and society to realize the combination of production study and research;cultivating the studenttutor system and credit system for adult education to ensure suff...
在培养和管理过程中应采取以下措施:在培养方式上,扩大学校和社会的联系,实现产学研相结合;在培养过程中,实行学生导师制和学分制,保证成人教育具有较充分的弹性。
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However, in the case of bis (trifluoromethyl sulfonyl amide, more complicated tribochemical reaction occurred during friction process with the formation of FeS as well as organic and inorganic fluoride.
XPS研究表明,在摩擦过程中,烷基咪唑氟硼酸盐离子液在钢/钢摩擦副表面形成FeF〓和B〓O〓;烷基咪唑六氟磷酸盐离子液在摩擦过程中形成了FeF〓和FePO〓,而二胺盐发生了复杂的摩擦化学反应,有氟化物和FeS形成。
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The patent separation process of adsorptive distillation was studied theoretically and experimentally in this thesis.
本文对吸附蒸馏过程的原理、特点、适用范围、过程模拟及在模拟过程中涉及的吸附平衡等进行了详细的分析,并进行了大量的实验研究,对吸附蒸馏过程及所提出的理论进行了验证。
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There are no distinct differences between ancestral character state and descendant character state in some characters. 4. Only one outgroup can't give enough information to tell what the ancestor looks like. It make us not to understand how a lot of charactors evolved. 5. The matsutake group is polyphyletic. 6. The character coding is not precise enough. 7. Some characters are not homology. The result of molecular systematic study on the matstuake group shows the group is not monophyletic. The matsutake group is more closed to Tricholoma than Armillaria. ITS sequence of Catathelasma ventricosum is nearly identical to that of the matsutake group, although apparently they are very different from each other in morphological characters.
对松口蘑群通过形态学特征进行系统发育关系分析造成很大的干扰的原因有:松口蘑的种类大多形态特征比较简单,可提供进行分析的特征不多;某些性状在一些状态之间的反复转化,造成分析上的误差;在进化过程中某些性状无明显的祖征和衍征,在分析过程中很难确定进化极性;选择外群时应该用一个特定类群进行整体理解后,确定各个性状的极性,不要只用单种作为外群;松口蘑群是一个多系群;进行比较的性状不一定是同源的;数量性状编码过于粗放,反映不出真实的情况。
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Sequence analysis of this Full-length pax-6 cDNA fragment of Bufo raddei Strauch showed a 2026-bp sequence.
这是一个在进化上相当保守的基因,说明了该基因在眼睛和晶状体发育过程中的重要作用和在进化过程中的重要地位。
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The hydrolytic degradation research results showed that the PDLLA molecular weight was first degraded, then the weight loss happened in normal saline, and the water soluble crystallizable oligomers were formed during the process of degradation. The thermal degradation research results showed that the thermal degradation of PDLLA is a random breaking process, the molecular weight was degraded at range of 100癈~250癈, only above 250癈, the weight loss was found.
通过研究PDLLA的生理盐水降解性能和热降解性能,发现PDLLA在生理盐水中首先发生分子量降解,然后产生重量损失,且降解过程中生成具有晶体结构特征降解产物;PDLLA的热降解是一个无规的断裂过程,在100℃~250℃范围内,PDLLA的分子量迅速发生降解,在250℃以上,低聚物相继发生裂解,产生重量损失。
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Following the route, the dissertation investigates into the cultual factors driving the socio-economic transformation within the scopic framework of structure, investigates and analyzes the forming process of cultural dynamics within the general framework of socio-economic changes.
循着这条线索,在结构的范畴框架内考察驱动社会经济转型的文化因素,在社会经济变迁的总框架中考察分析文化动态成因过程,探寻文化同经济之间的互动互补的契合点——制度,最后界定出闽西文化在这一变迁过程中的实际地位与作用。
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We investigated the effect of visiblelight on the UV-polymerization of diacetylene and an accelerationphenomenon of the visible-light on the monolayer polymerizationwas observed. It means that the visible-light can accelerate the chainpropagation but have no effect on the chain initiation, thus benefitthe producing diacetylene polymer with higher molecular weight.
考虑到双炔酸聚合过程中,链引发和链增长所需的激发波长不一样,前者的激发波长必须小于310 nm,而后者的激发波长在可见光区,我们因而在液面上测量了可见光对聚合反应的影响,发现可见光照的确能加快反应的进行,就是说,在链引发和链增长的竞争中,我们可以用可见光加快链增长过程,一定程度上增大分子量。
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The paper introduces the characteristics and performance of HGIS devices and their application in Bao'an Converter Station of GuiGuang II DC Project,and analyzes the abnormal condition that a 500 kV HGIS disconnector did not work correctly due to the difference between its framework and blueprint.Based on the analysis of the original blueprint,three design alternation schemes are presented and compared to compensate the mismatch,and the realization of a scheme in this station is discussed.In addition,some suggestions about design,commissioning and operation of an HGIS are proposed.
笔者首先简要介绍了HGIS设备的特点、性能以及国产500 kV HGIS开关设备在贵广II回直流工程宝安换流站的应用情况,接着分析了因隔离开关机构箱与设计图存在一些差别导致现场调试过程中出现隔离开关不能正常操作的情况,在分析原始设计图的设计原则的基础上,给出了3种设计变更方案及其优劣性对比,介绍了该站所选方案的具体实现情况,最后给出了在今后的HGIS设计、调试和运行过程中须注意的几点建议。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。