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For the bud directly differentiation , the suitable culture medium was MS+BA 2mg/L +NAA 0.2mg/L or MS+TDZ0.01mg/L +NAA0.2 mg/L, of which the induction rate was 88% and 100% respectively. An efficient tissue culture system has been developed with the bud of mature seed of Aesculus hippocastanum L. as explants . Buds were induced from 2cm high young plantlet cultured on MS medium supplemented with 0.6 mg/L 6-BA plus 0.1mg/L or 0.4~0.6mg/L ZT plus 0.1 mg/L NAA for 15 d, and the induction rate was 100%, the mean No. of buds was 35.7; The combination of MS+0.2mg/L 6-BA +0.1mg/L NAA + 10mg/L AD was the suitable culture medium for elongation of the buds.

以欧洲七叶树成熟种子的胚芽进行离体培养和快速繁殖，结果表明：高约2cm的无菌苗在MS+0.6mg／L 6-BA+0.1 mg／L NAA或MS+0.4～0.6mg／L ZT+0.1 mg／L NAA培养基上培养15 d左右可诱导出不定芽，分化频率为100％，平均每株产芽35.7个；MS+0.2mg／L 6-BA+0.1mg／L NAA+10mg／L AD培养基有利于芽伸长；生根培养基为1／2MS+0.4 mg／L NAA+0.2mg／L IBA时，生根率可达75％。

Accelerated cooling (60℃/s) to 400℃ refines the allotriomorphic ferrite grain but retards the nucleation of intragranular ferrite with its distribution on prior austenite grain boundary as well as the volume fraction of bainite increased, and the strength increased but the elongation decreased and yield ratio became much higher on the steel.

当冷速增加到60℃/s且卷取温度为400℃左右时，铁素体在晶内形核受到抑制，铁素体沿原奥氏体晶界分布，晶粒得到细化，贝氏体体积分数增加，强度有较大的提高，但延伸率较低，屈强比较高。

In the further P/M processing,gamma titanium aluminide compact with fine and homogeneous microstructure has been obtained by HIP,although elongation of the compact is poor.

在随后的粉末冶金技术研究中，运用热等静压技术得到了组织细小、均匀的粉末TiA l系金属间化合物，但材料的伸长率很低。

The vulcanization of styrene-butadiene rubber was delayed by the EHL-g-PEW. The break elongation and tensile strength were respectively higher 0.45Mpa and 62.50% than that of EHL. And EHL-g-PEW is a good antiager.

EHL-g-PEW的加入，对丁苯橡胶具有延迟硫化的效果，扯断伸长率和拉伸强度比纯EHL改性的橡胶相比分别提高了0.45Mpa和62.50%，而且它具有良好的耐老化性能。

The effect of silicon on aluminum detoxification in leguminous crops were investigated in this study by analyzing the effect of Si on root elongation and membrane lipid stability in root apices under Al stress in five cultivars of Stylosanthes.

为了解硅在解除豆科作物铝毒方面的作用，本文以5个品种的柱花草为材料研究了硅对铝胁迫条件下的植物根伸长及膜脂稳定性的影响。

The results show that the degummed apocynum venetum fibers belong to high strength and high modulus low elongation type fiber, and have better tensile properties and better heat resistance.

试验表明：精干罗布麻纤维的拉伸属高强高模低伸长类型，且纤维具有较好的拉伸性和较好的耐热性。

The heat distortion temperature and notched impact strength of flame-resistant PA was enhanced highly,and the elongation rate and notched impact strength of flame-resistant PP was upgraded greatly,meanwhile the apparence of products was improved.

在矿物增强阻燃复合材料中引入稀土表面改性剂对无机粉体进行活化处理，在保持阻燃性能的前提下，改善了阻燃剂及无机粉体材料与高分子材料的相容性，显著提高了阻燃PA材料的热变形温度和缺口冲击强度，明显提升了阻燃PP材料的伸长率和缺口冲击强度，产品表观状态也得到大幅度改善，阻燃复合材料的综合性能优异。

Its results showed that the flowability decreased, and the oxygen index of the material increased with the increase of grain size of brucite powder. When the screen mesh below 1250 , tensile strength and elongation at break of the material increased with the increase of grain size of brucite powder.

实验表明，在1250目内随粉体粒度的增加，体系的拉伸强度和断裂伸长率呈上升趋势，而在1250目以上，情况却不同，2500目的粉体所填加体系的拉伸强度和断裂伸长率较之1250目的粉体所填加的体系的小得多。

The mechanical and calorifics properties of composites rise with the increase of SWNTs concentration,composites showed higher mechanical properties such as Young's modulus,tensile strength and elongation along the stretched direction than perpendicular to it.

对复合材料进行了力学性能测试，随着碳纳米管含量的增加，复合材料的弹性模量、拉伸强度和延伸率均得到明显提高，并表现出明显的各向异性。TGA分析表明SWNTs的加入明显提高了复合材料的热稳定性。

Expression of this gene is more efficient, because the enzyme catalyses the three chain elongation reactions starting from the C5 precursors to the C20 molecule.One way to increase the heterologous production is to increase the pool of precursors in the host.

表达这种基因是更有效率的，因为酶催化的三个链伸长反应，从碳五前兆向c20 molecule.one方式，以增加外源生产，是增加池体在东道国。

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。