查询词典 PN
- 与 PN 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Ginkgo is more drought tolerant,and maintain relatively higher Pn under drought;Robinia pseudoacacia is less drought tolerant,and Pn decrease greatly under stress;Ailanthus altissima is placed in the middle.
耐旱能力较强的银杏在干旱胁迫下维持较高的光合作用;刺槐的抗旱能力最弱,光合速率下降幅度最大,臭椿居中。
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In chapter three, the new concepts of the bifurcation point and asymptotic bifurcation point of compact continuous operators in Menger PN-spaces are introduced. Some sufficient conditions for the existence of the bifurcation point and asymptotic bifurcation point are obtained. And the problems on the intrinsic value and intrinsic element of compact continuous operators are studied in Menger PN-spaces. A series of theorems on the existence of the intrinsic value and intrinsic element are obtained.
第三章,在概率赋范线性空间中提出非线性算子的歧点和渐近歧点的新概念,获得了非线性算子存在歧点和渐近歧点的充分条件;讨论了Menger概率赋范线性空间中非线性算子的固有值和固有元问题,得到了非线性算子存在固有值和固有元的一系列充分条件。
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There were 5 patients suffered from abdominal distention and gastric retention, and 4 patients suffered from diarrhea in EN group.
结果:1周内,EN+PN组患者13例未发生胃肠道不耐受症状;EN组15例发生腹胀及胃潴留5例,腹泻4例。1周后,EN+PN组患者血清白蛋白水平较营养支持前有明显升高,差异有统计学意义(P.05)。
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It was found that hyaluronidase was not a necessary factor to establish apneumococcal meningitis via intranasal instillation.
模拟S.pn在人类感染途径,通过鼻腔滴注TIGR4成功建立了小鼠脑膜炎模型,并且证实小鼠可出现嗜睡、弓背等脑膜炎典型症状,为下一步研究S.pn致脑膜炎的分子机制奠定了基础。
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During the course of water stress, along with the extension of coercion and the intimidation of the deepening,the Pn of P.euphratica and P.pruinosa experienced three phases:sharp decline-slow, rebound -down and again under moderate and serious stress condition.16 and 24 days later after water stress starting,the reason of Pn drops mainly is the stomatal limit,and 48 days later,primarily is non-sto matal limit.
3在水分胁迫进程中,随着胁迫时间的延长及胁迫程度的加深,中度和重度水分胁迫下胡杨、灰叶胡杨的净光合速率经历了急剧下降-缓慢回升-再下降三个阶段。
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The results showed that the diurnal changes of photosynthesis of S. chinensis in tile overstory took on "double-peak" curve with remarkable midday depression. The midday depression was mainly due to non-stomata1 limitations. On the contrary, the diurnal changes of photosynthesis of S. chinensis in the understory took on "one-peak" curve with low Pn. The maximal Pn was only half of that of S. chinensis in the overstory. The correlation analysis showed that the limiting factor for this low Pn might be light intensity (p=0.001). Compared with its accompanying plants, S. chinensis was in a disadvantaged status in the community with low photosynthetic capacity, water use efficiency, and the ratio of photosynthetic rate to respiration rate.
结果表明:夏蜡梅冠层的光合速率日进程呈"双峰"曲线,有明显的"午休"现象,经分析其"午休"的原因主要是由非气孔因素引起的;林下夏蜡梅则表现为"单峰"曲线,净光合速率较低,最大净光合速率不及冠层的1/2,相关分析结果表明其最重要的影响因子是光合有效辐射(p=0.001);与其它伴生植物相比,夏蜡梅的日均光合速率、最大光合速率、水分利用效率和光合速率/呼吸速率都明显偏低,在群落竞争中处于不利地位。
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In order to study the origin of the particilate nitrogen and phosphorus PN (P nonpoint source pollution there, so as to get it under control, some artificial rainfall experiments was made around Guanting Reservoir, the results show that the correlation between transporting rate of PN and yielding rate of sediment is very good, with the average correlation coefficient 0.9594 and 0.9772 for PN and PP respectively.
为研究妫水河流域的颗粒态氮磷非点源污染来源,以控制非点源污染,在官厅水库周围进行了野外人工降雨试验。试验数据表明,氮磷输移率与产沙率具有很好的相关性,颗粒态氮、磷的平均相关系数分别为0.9594和0.9772。
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The medium water stress in short-term could promote Pn and improve water utility efficiency, but the effect on Pn of Cynanchum komarovii under powerful water stress was marked.
中度土壤水分胁迫在短期内对牛心朴子叶片光合作用具有促进作用,而且有利于WUE的提高。
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Results showed diural variations of leaf Pn displayed bipeaked curve model, indicating the depression of photosynthesis at noon. Leaf Pn rate in June was higher than in September; Compared to leaf Pn, Cs had a similar changing curve, Cs in June was higher than in September. While diural variations of intercellular CO2 concentration were opposite to that of leaf Pn and Cs, decreased before 1200,increased after 1200, decreased again at 1600,after 1600 increased again; diural variations of climatic factors displayed single peaked curve model, peakedvalue occurred at 1400,and their influences on physiological factors were indirected and integrated.
结果表明,光合速率的日变化具有双峰型,存在光合午休现象,6月的光合速率高于9月;沙棘的气孔导度较低,其日变化与光合速率有相似的变化趋势,6月的气孔导度大于9月;细胞间CO2浓度的日变化与光合速率和气孔导度的日变化相反,1200之前下降,之后上升,1600下降,然后上升;气象因子的日变化具有单峰型,峰值1400出现,对生理因子的影响是间接且综合的。
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The results indicated that the photosynthetic rate of lettuces was increased by adding nitrogen fertilizer and it was also increased with the intensity of light.
结果表明,增施氮钾肥3个莴笋的光合速率增加,光合速率Pn随光照的增加而增加,双尖的Pn最低,大白甲和挂丝红的Pn较高。
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- 推荐网络例句
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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.
Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。
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I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.
我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。
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The shamrock is the symbol of Ireland and of St.
三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。