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Between 1000 B.C. and 1000 A.D. various treatises on mathematics were authored by Indian mathematicians in which were set forth for the first time, the concept of zero, the techniques of algebra and algorithm, square root and cube root.

在公元前1000年至公元1000年之间，由印度数学家所写的各种数学论文首次阐明了出来，零的概念，代数和运算法则的技巧，平方根与立方根都阐明了出来。

The observational and calculated results are well matched. The calculated mean diameter, mean square-root diameter, mean cube -root diameter and liquid water content are all well matched with the observational results; In the paper two examples have been analyzed by using the seeding region data and the possible affecting region data in leeward region. It is found that F-100, 2dc, and 2dp's particle concentrations increase in leeward region, but rising extent is different, which is likely to be due to difference of seeding effect time.

拟合值和观测值吻合的较好，计算出的平均直径、均方根直径、均立方根直径和粒子浓度与观测值也比较吻合；本文对两组个例的催化影响区域及可能采集到相应值的下风方区域进行了分析，催化下风向影响区的F-100、2DC、2DP的粒子浓度比背景值都有所增加，但是增加的幅度不同，应该是催化响应时间的原因。

The optimal analytical results and numerical analysis results show that the optimal timer is inversely proportional to cube root of square speed; moreover, the optimal distance is proportional to cube root of travel speed.

并针对各种移动速度下之交通情境，分析不同行动电话位置更新策略之总成本。

The method that simple cubic equation was changed from general to standard was introduced and the distribution of standardized real root was illustrated, which solved the problem of the distribution of any real root for simple cubic equation.

摘要介绍了一元三次方程一般式化为标准式的方法，结合图形给出了标准式的实数根的分布情况，从而解决了任意一元三次方程的实数根的分布的问题。

The absorption of root system was the main sources of nitrogen in the plant.The effects of matrix ventilation on the abaorption,transportion and metabolism of nitrogen in the root system of cucmber were discussed deeply.The results showed that contents of ammonium,nitrate,free amino acids and soluble protein in cucumber roots were higher in G1 treatment.Contents of ammonium,nitrate and free amino acids in cucumber roots were the trend of the dropping after the first rising in F1 treatment,but contents of soluble protein was lower11.03%than that of the control.

根系吸收是植物体内氮素的主要来源，本研究深入探讨了基质通气状况对黄瓜根系氮素吸收、运输和氮代谢的影响，结果表明G1通气处理根系的铵盐、硝酸盐、游离氨基酸和可溶性蛋白含量均较高；非通气处理(F1处理)根系内铵盐、硝酸盐和游离氨基酸含量呈先升高后降低的趋势，而可溶性蛋白含量始终较低，比对照降低11.03%。G1处理根系硝酸还原酶、亚硝酸还原酶、谷草转氨酶、谷丙转氨酶、谷氨酰胺合成酶活性均较高；而F1处理的酶活性在处理末期显著降低，其中谷氨酰胺合成酶活性比对照降低33.33%。

This demonstrates the inhibited growth in cucumber crops is partly due to the accumulation of ROS in cucumber root induced by the low root temperature.

由此可见，低根温引起黄瓜根系活性氧的大量产生是引起黄瓜生长受到抑制的生理原因之一。

Reaction schedule of root restriction in cucumber was related to culture period and root restriction degree.

限根反应时间与栽培时期及限根程度有关，春茬12L、8L、4L处理黄瓜的限根反应时间分别为定植后49d、64d、79d，秋冬茬黄瓜的限根反应时间则分别提前了15d。

Gel-blot analysis of RNA isolated from cucumber leaf, root, stem and flower showed that the abundance of CuATP mRNA was low or no in root, moderate in stem and flower, and higher in leaves.

CuADC的表达分析表明CuADC在黄瓜中以单拷贝形式存在，在花和根中的表达量较大，茎叶中较少，不同品种间也存在差异，对胁迫的响应各不相同，"花打顶"后其表达量增加。

So worked resistance decrease of grafted cucumber.Grafted cucumber and squash root exudates have the inhibitory effect of germination of cucumber, elongation of root and hypocotyls, and have the same effect on squash.

南瓜和嫁接黄瓜根系分泌物对黄瓜发芽率，胚根胚轴的伸长均具有明显的抑制作用，这种抑制效果与浓度呈正相关；对南瓜发芽率及其胚根胚轴伸长的抑制也达到显著水平，这种抑制效果与浓度同样呈正相关。

The root activity and the yield were also decreased.The content of soluble protein,sugar and titratable acid in cucumber fruit were increased after infection,but the content of Vc and free amino acid were decreased.Key words: Meloidogyne incognita,Plant protecting,Cucumber,Root activity,Yield,Quality

有研究表明，危害我国北方地区日光温室内黄瓜的线虫主要为南方根结线虫［3］，本文初步研究了南方根结线虫对日光温室内黄瓜的生长和品质的影响。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。