表明的

It,s allelchemicals were isolated through extraction, thin-layer chromatography, and column chromatograpathy. After the white clover was infused in ethanol and evaporation, the leavings was dissolved by water. The aqueous extract was extracted by petroleum,chloroform, ethyl acetate and n-Butanol successively, and the bioassay showed that the chloroform phase has obvious inhibitory effect, the inhibitory rate was 44.32%,88.08% on Abutilon theophrasti M., seedling length and root length, 82.08%,92.16% on Echinochloa crusgalli L., seedling length and root length, and the Amaranthus retroflexux L., germination rate is 0, the secondly was ethyl acetate phase.

运用萃取、薄层层析、柱层析等方法对白三叶草地上部分的化感物质进行初步分离，结果表明，白三叶草经乙醇浸提旋转蒸发后用蒸馏水溶解，依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取，生物测定表明氯仿组分对杂草的抑制作用最强，对苘麻芽长和根长抑制率分别为44.32%、88.08%，对稗草芽长和根长的抑制率分别为82.08%、92.16%，反枝苋的发芽率为0；其次是乙酸乙酯相。

Nigra, B. oleracea and B. carinata belonged to class 2A according to the classification of karyotypes by Stebbins (1971). According to Levitzky's and Stebbin's view, the more asymmetric karyotype a species has, the more evolved it is. Therefore, B. campestris is the furthest evolved species among the elementary species, and B. juncea and B. napus the furthest among the amphidiploid species. Compared with the previous reports, there is no any cytoplasm in the chromosome sample prepared using this protocol which is very useful for the karyotype analysis, as well as the FISH research on Brassica species.

对上述研究结果分析表明：（1）芸薹属复合种是由基本种相互杂交而成；（2）B基因组与A或与C基因组亲缘关系较远，而A和C基因组亲缘关系较近；（3）芸薹属复合种在演化过程中，发生了染色体结构上的重排现象；（4）芸薹属复合种演化过程中，rRNA基因位点发生了减少；所获结果与国外同类报道相比表明：国内的白菜型油菜存在新的rRNA基因位点，即rRNA基因在芸薹属同一物种不同的品种间具有多态性；有关这类研究国内尚未见报道。

This thesis points out three conditions of favorable soil-returning volume,and gets the critical water-content coefficient of bed-irrigating sowing, andthinks that water volume, soil—returning in volume and initial soil water contentcoefficient affects differently the course and the result of infiltration, and revealsthe laws of variations of soil moisture content, and shows the different effect onsoil - wedded states of water volume, depth of seed ditch, soil apparent density,soil-covering depth,initial soil moisture content, width of seed ditch and soil-wedding states, and suggests that the soil-wedding state watering after sevendays is use to evaluate the quality of bed-watering seeding.

结果表明灌水量、种沟宽度、回土量和土壤初始含水率对入渗过程和入渗结果存在不同影响；揭示了坐水播种土壤含水率在种沟断面上的变化及其随时间的变化规律，模拟结果还表明了灌水量、种沟深度、土壤容重、覆土厚度、土壤初始含水率、种沟宽度、回土量对土壤湿润状况的影响及确定适宜回土量的三个条件。

The phenetic characteristics including Gram stain, catalase test, the adaptation to different stress conditions and producing acid from carbohydrates were tested.

结果表明，分离菌株N7-03具有较强的苹果酸-乳酸酶活力[117.05mg苹果酸/log]，进一步的研究表明，N7-03具有良好的酿造学适应性。2。

California Congresswoman Lynn Woolsey, who is scheduled to appear at Saturday's rally, said the president's new plan shows he is not listening to the American people even though they made their opinions clear in November's congressional elections.

里恩·伍尔西作为加州国会议员，打算在周六的集会上公开露面，陈述总统的新计划表明，即使美国人民在11月议会选举时已经非常明确的表明了观点，他根本没有倾听这些声音。

Our results indicated that tansgene should not increase the risk of pollen-mediated escape and damage the genetic divergy, based on transgenic rice. A new fast method of risk assessement for genetic divergy was proposed. Our studies also indicated that a wide coverage of wind-dispersed pollen of Bt-transgenic rice has potential risk to sericulture in the mulberry-rice mixed cropping area of southern China.

本研究结果初步表明，转基因并不会引起水稻导入基因通过花粉漂流杂交逃逸的风险，对水稻遗传多样性不会造成影响；提出了一种快速评估转基因对遗传多样性影响程度的新方法；对转基因花粉可能对我国南方桑稻混种区养蚕业的影响研究表明，抗虫等转基因水稻在这些地区商业化生产可能会对养蚕业造成危害，需要进一步开展评估研究。

Soil water characteristic curve was measured with a sand column for both drying and wetting processes, and the data were used to fit the van Genuchten model. The fitted curve is in good agreement with the actual measurements, residual water content and other factors used in the van Genuchten model were obtained. For the sand studied,. The results from this study may provide reference for research of water and solute movement in unsaturated soil.

利用Van Genuchten模型对用砂性漏斗测量中砂的吸湿过程和脱湿过程土壤水分特征曲线进行拟合，结果表明实测曲线和拟合曲线吻合很好，并得出Van Genuchten模型中的残余含水量、特性参数α和n，模拟计算表明，中砂有α=1.69α的关系，为研究水分和污染物在非饱和土壤中运移问题提供土壤水分运动键参数。

A method is used to calculate the correlation dimension from a time series, and the correlation dimension is used to analyze the aeroacoustic noise signals of helicopter scissors tail rotor.

分析结果表明剪刀式尾桨引起的气动噪声含有混沌特性，同时对比理论和试验结果表明剪刀尾桨构型的参数对气动噪声有明显的影响。

Preliminary results suggest clear differences between the exposed side of the samples and the side protected by the heat shield.

初步的结果表明暴露的岩石表明与受隔热层保护的那一面有明显不同。

This photocatalyst was used to treat wastewater containing azo dye. It shows that natural rutile photocatalyst has certain photocatalytic action on azo dye.

用制备的天然金红石光催化材料处理含偶氮染料废水，结果表明其对偶氮染料的作用既有吸附，也有降解，表明天然金红石光催化材料有一定的光催化活性。

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。

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 。