时间延长

Prolonging nitration time and increasing reaction temperature would promote the formation of dinitro products while shortening the nitration time and decreasing reaction temperature would promote the formation of mono-nitro products.

延长反应时间和提高反应温度有利于二硝化产物的形成，缩短反应时间和降低反应温度有利于单硝化产物的形成。

objective to study the effect of qingshanjianxin tablet on treating arrhythmia.methods sixty wistar mouse were ransdomed into six groups, aconitine evocate arrhythmia, and continuously observe the changes of electrocardiogram and record the latent period, the lasting time of the arrhythmia and the death rate.results qingshanjianxin tablet can prolong the latent period of the arrhythmia, shorten the lasting time of arrhythmia and lower the death rate.

目的 研究青山健心片抗心律失常的作用机制。方法采用乌头碱诱发wistar大鼠心律失常，持续观察心电图变化直至出现心律失常，记录心律失常的潜伏期、持续时间及死亡率。结果青山健心片高、中剂量组均能延长心律失常的潜伏期，缩短心律失常的持续时间，降低死亡率，与心律平片组无明显差异(p＞0.05)，疗效优于低剂量组、空白对照组、心律宁片组(p＜0.05)，高剂量组与中剂量组之间无显著差异(p＞0.05)。

A large drop in hardness appears in as deformed samples at a temperature 45 ℃ lower than the start temperature of the exothermal peak after isochronal annealing, indicating that the recrystallization and grain growth process is closely relatine to annealing time and temperatur.

出现明显晶粒长大的温度较DSC曲线显示的放热峰起始温度低45℃左右，这主要是由于变形组织的回复再结晶过程是退火温度与时间的函数，降低处理温度并延长处理时间能达到与高温短时处理相同的效果。

Flooding,as a kind of disturbance events,occurred with higher and higherfrequency over the world.To investigate the effects of flooding disturbance ongrassland vegetation and the soil,a comparatively thorough study was conducted onAneurolepidium chinense grassland in Songnen plain,Northeast China.The studysite was located in Sanjiadian National Rangeland in the territory of Da'an city,Jilirprovince,which was partly flooded in 1998.On the study site,Several transectssubjected to different flooding durations and intensities were designed for thecomparative study among them on such aspects as vegetation characteristics,seedbanks,vegetative propagation of rhizomatous plants,distribution patterns ofpopulations,interspecific relations,and physio-chemical properties of soil.Theresults were as follows:(1)Of the functional group composition of the vegetation,with the elongation of the flooding duration or the increase of flooding severity,theratio of hygric and hygro-mesic plants increase,while that of mesic and mesoxericplants decrease,of Therophytes changed unimodally,of Geophytes increased,whileof Hemicryptophytes decreased.

为弄清草地植被及其土壤环境对水淹干扰的响应，在松嫩平原羊草草地1998年部分遭受水淹的吉林省大安市三家甸子草场内设置了经历不同水淹干扰持续时间和不同水淹强度的样带，并在这些样带之间从植被特征、种子库特征、根茎植物的营养繁殖性能、种群分布格局、种间关系及土壤的理化性质等多个方面展开对比研究，主要结果如下：(1)在植被的功能群组成中，随干扰强度的增加和水淹干扰持续时间的延长，湿生、湿中生类植物功能群的优势度比例基本上是逐渐增加的，中生、中旱生类植物功能群的优势度比例则逐渐减小，而一年生植物的优势度比例呈单峰型变化，地下芽植物比例增加，地面芽植物比例减小。

The average SNERP of SSS patients was 525± 53.02ms,much higher than those of both the bradycardiac and normal cases (P0.01).The prolongation of SNERP(〉520ms)with high susceptibility and idiocrasy showed great significance for clinical diagnoses of sick sinus syndrome.

病窦组者SNERP平均值为525±53.02ms，显著高于窦缓组（427±18.19ms）和正常组（367.14±18.37ms）者（P〈0.01）；SNERP的延长（〉520ms）在病窦的诊断中具有重要的临床意义，其敏感性与特异性远较窦房结恢复时间与窦房传导时间为高。

The results indicated that the osteogenetic ability of the study group was significantly higher than that of the control group at the same time point, and the neogenetic bone increased along with the prolongation of the implantation time.

结果：实验组4周和8周移植物组织块ALP活性分别为(63.48±0.873)和(69.527±0.635)IU/L，移植物组织块成骨含量分析分别为(2.50±0.38)和(4.70±0.67)分，对照组4周和8周移植物组织块ALP活性分别为(2.50±0.38)和(4.70±0.67)IU/L，移植物组织块成骨含量分析分别为(1.90±0.54)和(3.40±0.54)分，表明，实验组在同时间点的成骨能力显著高于对照组，并随植入时间的延长，新骨形成增多。

As far as the φ 30 mm ×300 mm column apparatus is concerned, the better applying is that filling length exceeds 20 cm; contacting time is beyond 0.5 h and outflux is 2.7 mL/s.

随着填充高度的升高、处理液与抗菌材料接触时间的延长、处理液出口端流量的减小，填充柱的杀菌性能逐渐升高；对于声30mm 300mm的填充柱，当填充高度≥20cm，停留时间≥0.5h，出口端流量为2.7mL／s时，杀菌效果较好。

This experiment aimed to systematically investigate and analyze the ethanol activated rates of mouse oocytes, affected factors of oocytes activation, types and development of parthenotes, and the organization and roles of the cytoskeleton during pronuclear formation and migration and early embryo cleavage by ethanol activation of oocytes, embryo culture in vitro and immunofluorescence cyto-chemistry. The results:(1) The ethanol activation of mouse oocytes showed that the activated and developmental rates of oocytes increased significantly with the increase of ethanol concentration and extension of exposure time, but over concentration and exposure time would result in increased fragment rates significantly. 7% ethanol treated oocytes for 7min was the optimum activated condition.

本实验主要利用卵母细胞的乙醇激活、胚胎体外培养和免疫荧光细胞化学方法对小鼠卵母细胞乙醇激活效率、影响因素、孤雌胚类型、发育、原核形成、迁移及早期胚胎卵裂过程中细胞骨架的组装、作用等进行了系统的研究和分析，结果显示：(1)小鼠卵母细胞的乙醇激活结果表明，随着乙醇浓度的升高和作用时间的延长，卵母细胞激活率和发育率都显著提高，但乙醇浓度过高和作用时间过长会导致卵母细胞碎裂率的显著增加，7%乙醇作用卵母细胞7min 为最佳激活条件。

Deterrent effect of bitter almond oil on the adult of Sitophilus zeamais Mots. was tested. The result showed that the deterrent effect is decreased with prolonging the treatment time. On the other hand, the mortality rate of Sitophilus zeamais Mots increased in accordance with prolonging the treatment time, eventually achieve the 100% mortality.

苦杏仁精油对玉米象的忌避活性结果显示忌避活性随着处理时间的延长而降低，但是随者处理时间的增加玉米象的死亡率逐渐增大，最终达到了100%的死亡率。

In comparison with the control group, the time to falling asleep and the duration of sleep due to supraliminal dosage of sodium pentobarbital were shortened and prolonged significantly, respectively,in the small-dosage and large-dosage groups.

橙皮水提取物小剂量给药组，大剂量给药组能显著加速阈上剂量戊巴比妥钠的入睡时间和延长戊巴比妥钠的睡眠时间，差异有显著性意义。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。