多叶的
- 与 多叶的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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As a result of analysis to many of the results of experiment, checked up on specimens, field investigation and combining with the theories of palaeobotany, comparative morphology, evolutional morphology of vascular plants and taxonomy, it can be concluded as following: the primitive sorts of Cycadaceae are the sorts that pinnate leafs are dichotomy; among these, the sort that pinnate leafs are tripinnate-dichotomy is most primitive, from this sort gradually evolve to bipinnate-dichotomy, to only for monopinnate-dichotomy, from this sort evolve to the sorts that pinnate leafs are simply pinna; among the sorts of simply pinna, the species that segments of megasporophyll possess much more triplicate to monodichotomy are most primitive.
经过大量的实验结果分析、查阅标本和野外调查,结合古植物学、比较形态学、演化植物学和分类学等理论进行分析,认为苏铁科原始的类型为羽叶呈二歧状分叉的种类,其中最原始的又是羽叶呈三回二歧状分叉的种类,从这个羽叶类型逐渐演化出一回二歧状分叉的羽叶类型,再演化出羽叶为单羽状的类型;而单羽状叶的类群中,又以大孢子叶侧裂片具三回、二回及一回二歧状分叉数量多的种类为最原始,而侧裂片二歧状分叉数量少的为较进化,侧裂片无二歧分叉的如拳叶苏铁类为最进化的种类。
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Stem leafy; petals more than 2 mm; basal leaves including petiole more than 1 cm.
茎多叶;花瓣超过2毫米;包括叶柄的基生叶超过1 厘米 5
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A pulsator for a washing machine is provided, which comprises: a main body installed on a bottom of the washing tub, and having a fan chamber and a upper surface formed with at least a spout outlet; a spout fan having a fan shaft and a plurality of fan blades extending radially from the fan shaft, the spout fan rotates relative to the main body to eject washing water upwards through the spout outlet; a bearing means for rotatably supporting the fan shaft in a radial direction as well as an axial direction; and means for rotating the spout fan.
一种洗衣机波轮,包括:一个安装在洗衣筒的底部的主体,具有叶轮室以及形成有至少一个喷水出口的上表面;一个具有叶轮轴和多个从叶轮轴沿径向延伸的扇叶的喷水叶轮,该喷水叶轮相对于主体旋转从而产生向上的洗涤水流;可在径向以及轴向上旋转支承叶轮轴的支承部件;以及使喷水叶轮旋转的部件。
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The results indicate seawater concentration has no effect on absorbency, pH, relative density, dry matter and water contents in Aloe vera leaves. While, seawater stress causes increased MDA and membrane penetration, decreased phytochroms, prolines and NO_3~--N. It is beneficial to plant growth when irrigation was done with 10% seawater, because of higher ratio of K~+/Na~+ and lower ratio of Na~+/Ca~(2+). In addition, the polysaccharide contents in Aloe vera leaves increase twice and triplication under 25% and 50% seawater irrigation respectively, the barbaloin contents increase over triplication in var. 75% seawater and over twice in var. 50% seawater and var. 100% seawater. However, when seawater concentration exceeds 25% the growth of plant was inhibited, biomass decreased, flowering time was deferred, Ca~(2+) content decreased caused by Na~+ accumulation in leaves.
结果表明:在海水胁迫下,库拉索芦荟全叶汁的吸光度、酸度、相对密度、总固形物和水分含量总体上受海水浓度的影响不大;但芦荟叶的丙二醛含量和质膜透性增加,叶绿体色素、脯氨酸和硝态氮含量减少;在10%海水浇灌下,芦荟叶细胞具有较高的K~+/Na~+比和较低的Na~+/Ca~(2+)比,对库拉索芦荟的生长有一定的促进作用;在25%海水和50%海水浇灌下,芦荟多糖含量提高了2-3倍;在75%海水浇灌下芦荟甙含量增加了3倍多,在50%海水和100%海水灌溉下,其含量也增加了2倍多;当海水浇灌浓度超过25%后,库拉索芦荟的生长明显受到抑制,生物量降低,抽苔期推迟,同时,海水浓度的增加也导致芦荟叶中累积大量Na~+,从而使得芦荟叶中Ca~(2+)含量降低,但Mg~(2+)并没有受到海水浓度的影响;用浓度低于75%的海水浇灌库拉索芦荟可以降低剖面深度在0-100cm之间的土壤盐度;其抗氧化保护酶中超氧化歧化酶的酶活力相对保持稳定,过氧化物酶的酶活力在10%海水浇灌下明显提高,随后则下降,而过氧化氢酶的酶活力则随海水浓度的升高而下降。
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In the leaves of Liriodendroideae, some of the abaxial epidermal cells are papillose and the vascular tissue of the main vein appears to be separated. However, papillose were not found and there are uniseriate, multicellular or unicellular hairs distributed on the epidermis, and the vascular tissue of the main vein appears to be continuous in the leaves of Magnolioideae. Furthermore, in the Magnolioideae, the structure of the leaves of plants in Manglietia are different from that of Magnolia.
结果表明:鹅掌楸亚科和木兰亚科在叶的结构上的主要区别是鹅掌楸亚科两种植物叶的部分下表皮细胞呈乳突状,且整个细胞外壁只形成一个乳突,而在木兰亚科的植物中有单列多细胞或单细胞的表皮毛,未发现乳突;鹅掌楸亚科植物的叶主脉维管组织环分隔呈束状,且其外包被的纤维也排列成束状,而木兰亚科的80种1亚种植物中,叶主脉维管组织连成轮状,其外面也由一圈连续的纤维环所包围。
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The comparative study on vegetation background survey of the stationsand the comparison on level of phytocoenology on zonal habitats indicates thatthe diminishment of the numbers of families,genus and species,compositionof life types,diversity of communities and habitats,;and the increscence in theproportion of photosynthesis functional groups of C3/C4 plant,richness ofspecies,density of tussock and tiller,diversity of species,evenness,leaf areaindex,leaf area duration,dry matter production of communities alongside thelatitude increasing and the temperature decreasing;and the dynamic curve ofthe community productivity also tend to steadily increase along with thetemperature going up and the heat accumulation gradually in moderate-temperate steppe station from violent fluctuation along with seasonal badly-distribution of precipitation in warm-temperature steppe station;manifestingthat transformable tendency of productivity pattern of the community from morevigorous net assimilation,sparser and higher crops stricture of tussock and tiller,and possession on more resources by less species inclined to thicker in densityof crops,superior effectiveness of multi-leaves and pattern of multi-speciesresource sharing,reflecting that bigger disparity of the vegetationcharacteristics and the style of the community growth in the two differentthermal-type steppe stations owing to background of natural-historicenvironment and combination of water and heat.
内蒙古草原区两个不同热量型研究站点植被本底调查和显域地境群落学水平的比较研究表明:随纬度增加和气温降低,植物科、属、种的数目,生活型组成,群落类型和生境类型的多样性均趋于减少,而C3/C4光合功能群比值和群落的物种丰富度,株丛密度,物种多样性,群落均匀度,叶面积指数,叶面积持续时间和群落干物质生产能力均趋于增加,群落生产力动态曲线从随天然降水的季节分布不均而剧烈波动趋向于随气温逐渐升高和热量逐步积累而稳定增长,显示出两站点植物群落从较为旺盛的群体净同化作用、较为稀疏高大的群体结构和少数物种占有较多群落资源的生产力格局向较高的群体密度、优良的多叶性能和多物种资源共享的群落生产力格局转变,反映出在内蒙古草原区不同的自然历史环境背景和不同的温度条件及其水热组合状况影响下,两个不同热量型草原站点植被性质的分异特征和显域地境群落生长模式的较大差别。
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Inflorescences terminal, shorter than cauline leaves; involucral bract leaflike; heads many, hemispheric, many flowered.
花序顶生,短于茎生叶;总苞片叶状头状花序很多,半球形,多花的。
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Comprising the leafy members of the order Jungermanniales.
包括在叶苔目中的多叶成员。
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The experiment showed: 1PER, EST and AMY were polymorphic, meanwhile the isozymic chromatograph could identify the cultivars in this study; 2Two multifoliolate cultivars had specific isozyme loci PER-4, and the level of PER activity of the internal cultivars was higher than the external cultivars; 3 Genetic similarity and euclidean coefficient between the cultivars were 0.826-0.952, 0.500-1.118, between the multifoliolate cultivars were 0.904, 0.500; 4 Multifoliolate cultivares were classified for one type, and others for two other types.
结果表明:1测定的5种同工酶中过氧化物酶、酯酶、淀粉酶具有多态性,综合此3种酶酶谱可以鉴定供试的7个品种;22个多叶型品种具有一共同特征酶带PER-4,国内品种的过氧化物酶活性明显高于国外品种;3品种间的遗传一致度为0.826~0.952,欧氏遗传距离为0.500~1.118,多叶型品种间遗传一致度为0.904,欧氏遗传距离为0.500;4等级聚类分析结果为,以欧氏遗传距离0.400为分界,供试品种分为3类,2个多叶型品种为一类,其余的5种三叶型品种分为另两类。
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Result:Characteristics of the tangentical longitudinal section of stem with resin and surface view of leaves were elucidated.Besides xylem vessels and fibers of the stem,it was found that the red resin also exists in the cortex parenchyma cells of the stem and the medulla and xylem of the root.According to the HPLC fingerprint analysis result of the stems with and without resin,a number of flavones and stilbenoids were detected in the stem in which resin appeared after it wounded.
结果:阐明了含树脂茎的纵切结构以及叶的表面观特征;除了茎木质部导管和纤维中有树脂外,发现剑叶龙血树受到损伤之后在茎皮层薄壁细胞、根的髓部和木质部亦有树脂的分布;含树脂茎和无树脂茎的指纹图谱显示剑叶龙血树茎在形成树脂后的化学成分中出现了较多的黄酮类、茋类成分。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。