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- 与 keep under 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Based on the national tenth five magnitude project — Suzhou City Water Environment Improvement and Synthesize Demonstration item, we carried out the static simulation test and the dynamic simulation test under the condition of heavy pollution loading rate and low transparency and dissolved oxygen in polluted river of suzhou ancient city district. These investigations were on the base of the formers' work. We analyzed the purification effects and rules of plant floating-bed technology on polluted river water, and also applied the technology to purify the polluted river water in Miaojia River. Conclusions were summed up in the following:The dominance plant option test was carried out among Oenanthe javanica, Lolium mutliflorum and Allium sativum under low temperature condition. The results showed that the Oenanthe javanica was the dominance floating-bed plant under low temperature condition. Its net removal rate of TN、 NH_3-N、 TP、 COD_ were 51.3%、 65.2%、 55.6%、 57.6%, respectively, and inhibition rate of algae reached 92.3%.
本论文以国家863重大科技专项——&苏州市城市水环境质量改善与综合示范&项目为依托,在前人研究的基础上,根据苏州古城区污染河道污染负荷重、透明度及溶解氧低的实际情况,通过静态、动态模拟试验,研究了植物浮床技术对污染河水的净化效果及规律,同时在苏州古城区内的苗家河开展了植物浮床技术净化污染河水的示范应用,得出了以下结论:(1)低温条件下对水芹菜、多花黑麦草、大蒜三种浮床植物筛选的试验表明:水芹菜是低温条件下浮床植物的优势种,其对TN、NH_3-N、TP、COD_的净去除率分别为51.3%、65.2%、55.6%、57.6%,对藻类的抑制率达92.3%。
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During the early growth stage of seedlings, basal stem diameter and paripinnate number were decreased with the increasing of shade, taproot length, root : shoot ratio, total dry weight and leaf area per seedling were maximal under 37.3% NS, specific leaf area was increased with the increasing of shade, but the relative growth rate was declined. Seedlings grew fastest under 0.6% NS, suggesting that nutrients stored in seeds played an important role at the early growth stage. The treatment of 37.3% NS was best for established seedlings in seedling height, basal stem diameter, paripinnate number, rachis length, the maximum sub-leaflet number of individual paripinnate, leaf area per seedling, relative growth rate and net assimilation rate. Light intensity was positively correlated to total dry weight, and negatively to specific leaf area. The maximum of SLA was observed under 15.5% NS.
生长早期的幼苗基径和复叶数随遮荫程度的增加而降低;主根长、根冠比、总干重和单株叶面积均以37.3% NS处理最大;比叶面积随遮荫程度的增加而增大,而相对生长率则降低;幼苗株高在0.6% NS下增长最快,表明种子中贮藏的营养物质对幼苗的早期生长可能具有重要作用。37.3% NS处理对定居后绒毛番龙眼幼苗的生长最有利,幼苗的株高、基径、复叶数、叶轴长、复叶最多小叶数、单株叶面积、相对生长率和净同化率均在37.3% NS处理下获得最大增长;幼苗总干重随光照强度的减弱而降低;比叶面积在15.5% NS处理时最大。
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It is found that the initial pH,ρ(H_2O_2) and ρFe~(3+ of the solution have significant effects in this photooxidative process. The removal percentage of COD_ is higher under solar irradiation than under UV irradiation. Under the selected conditions, using solar/H_2O_2/ferric oxalate complexes to treat the landfill leach has good efficiency. landfill leach ; ferric oxalate ; photocatalysis
已有的研究表明,Fe3+羧酸盐络合物具有光催化降解有机物的性能[1-3];当草酸铁络合物体系中存在一定量的H2O2时,在太阳光或紫外光照射下,可发生类Fenton反应产生羟基自由基[4],而草酸铁络合物可在一定程度上循环利用,使Fe3+和C2O2-4可以重新形成草酸铁络合物:2[Fe(C2O4)n](3-2n)hν2Fe2++(2n-1)C2O42-+2CO2(1)Fe2++H2O2
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The fresh chicken feces were obtained from different age 18 healthy chicken, and were not detectedchlortetracycline. The mixture standard solution of CTC and OTC was added in fresh chicken feces at the concentration of 0.5, 1.0 and 4.0ug/ml respectively. The chicken feces were divided to two groups,one were put in the incubator under photophobic condition; another were under the natural illumination.Samples were collected after 0, 0.5, 1, 2, 3, 5, 7, 9, 12 and 15 days, The concentration of chicken feceswas determined by HPLC. According to the theory of degradation kinetics, we fitted the changed trendof concentrations in chicken feces under different time and studied the degradation characteristics ofchlortetracycline in chicken feces.
选取不同日龄健康鸡18只,实验期新鲜鸡粪,,经检测不含四环素类药物,然后加入金霉素标准液,使得各样品中制得的相应药品的浓度为0.5ug/mL、1.0ug/mL、4.0ug/mL,分为两个实验组,第1组放入培养箱中避光黑暗条件下;第2组置于室外自然光下,定时取样,取样时间为0、0.5、1、2、3、5、7、9、12和15d,鸡粪中药物的浓度用本实验建立的高效液相色谱法测定,根据药物降解动力学原理,对鸡粪中药物的浓度随时间的变化趋势进行曲线拟合,研究金霉素在环境鸡粪中的降解动态规律。
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Based on some principal rules of brittle rocks polyaxial tests and previous researches, three controlling failure types for brittle rock are obtained. The first type represents the brittle failure controlled by extension microcrack under the condition of lower hydrostatic pressure; the second represents the ductile failure controlled by friction sliding action under the condition of higher hydrostatic pressure when microcrack is close; and the third represents brittle-ductile failure type controlled by multiple factors mentioned above under the condition of high hydrostatic pressure when some microcracks are open and others are close.
通过分析脆性岩石多轴试验中的强度和破坏规律,在已有研究成果基础上,将其强度和破坏控制类型主要归结为3种:类型1,低静水压力时裂缝张开扩展,主要表现为张性微裂缝控制型脆性破坏;类型2,静水压力很高时,裂缝闭合,主要表现为摩擦滑移控制型延性破坏;类型3,处于两者之间时,微裂缝一部分张开,一部分闭合,主要表现为两者复合控制型脆延破坏。
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The mRNA level of per gene under high temperature was higher than that under low temperature when the larval and pupal stages were under the same photoperiod.
温度和光照是昆虫近日节律基因表达的授时因子,也是影响家蚕滞育的决定因素。
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Pollen germination rate on stigmas, pollen germination rate on culture medium and stainable pollen grain rate by I-KI of the four cultivars on average under high temperature were 16.00, 25.85, and 11.74 percentage points lower than those under nonnal temperature at that time, and 8.49, 6.63, and 6.02 percentage points lower than those under normal temperature at 4 days after treatment.
相同的趋势也表现在同期开花颖花的结实特征上,高温处理的当天和其后4d开花颖花的结实率分别平均下降了14.04和5.95个百分点;而高温处理当天的空粒率和秕粒率平均分别提高了10.06和3.98个百分点,处理后4d分别提高了3.98和1.97个百分点。
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At present, we can produce under 30ton anchors, under 35ton Fabricated Steel Stockless Anchor and under 20ton single steel casting for marine, Construction, mining, machinery, engineering.
目前,公司能生产30吨以下的铸钢锚、35吨以下的钢板焊接锚以及单件20吨以下的船用、建筑、矿山、机械、工程用等铸钢件。
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According to transpiration rate, extracells CO2 concentration, stomatic conductance of four alfalfa varieties under water-stress, it was concluded that reduction of photosynthetic rate was primarily resulted from stomatal factors under light and medium water stress and nonstomatal factors under severe water-stress in the experiment during branching.
通过分析水分胁迫紫花苜蓿分枝期叶片气孔导度、蒸腾速率和胞间CO2浓度的变化,认为试验中轻度和中度水分胁迫下光合速率下降的主要因素是气孔因素,重度水分胁迫下光合速率下降的主要因素是非气孔因素。
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The latency of the first component of SEP, which related to thalamocortical input, was shortest under awake and longest under HVRS, and their magnitudes under AW and paradoxical sleep were higher than those of slow-wave sleep and HVRS.
体诱发电位波形之第一个构造的时间延迟是与视丘皮质输入有关系,它在清醒期间的时间延迟最短,而在高电位节律性棘波期间的时间延迟最长。
- 相关中文对照歌词
- Going Under
- Medicine Man
- Under The Sea
- Under Lock And Key
- Trouble Under Your Roof
- Her Black Wings
- Under A Very Black Sky
- Under My Shades
- Under Control
- Summer Alive
- 推荐网络例句
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I was just taking her hand, to help her out of a car, and I knew it.
我只是握着她的手,扶她下车,但我知道这一切。
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China and South Korea have excoriated Japan over its approval of new school books which they say whitewash the atrocities committed during Japanese occupation, and anti-Japanese protests have been held in Chinese cities. The lingering bitterness over Japan's past imperialism still threatens to mar relations between the big East Asian powers
中国和韩国强烈谴责日本通过新的中学历史教科书,他们认为这一教科书掩盖了日本在其占领期间所犯下的残酷暴行,反日抗议活动在中国数座城市发生,历史上日本帝国主义制造的痛楚无法被忘却,这有可能破坏东亚强国间的关系。
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The real risk, he says, is that the Fed overstays its accommodative policies,'for fear of choking off a recovery.
他说,真正的风险在于美联储因为&担心抑制经济复苏&而长期实行宽松政策。