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According to this point it has good ability to absorb neutron and resist eradiation.Because of their high hardness and strength, excellent wear and corrosion, low density, low friction coefficient good self-lubricate and high temperature properties both silicon carbide and boron carbide components have been widely used in many industries.

由于碳化硼中的B14中子缺失，它还具有较大的热中子俘获截面，具有极好的中子吸收和抗辐射性能，由于其具有耐高温，耐酸碱腐蚀，高强度，高化学稳定性，比重轻，半导体等特点而成为众多行业的首选材料。

For the same variety, low temperature affected the bourgeon course of it seed and the seed emergence was stayed off, especially when the seed had low vigor.

结果表明，各样品的发芽势、发芽率和发芽指数和活力指数指标均在20~32.5℃范围内随着温度的升高而升高，达到一定的温度后出现下降趋势。

For the same variety,low temperature affected the bourgeon course of it's seed and the seed emergence was stayedoff,especially when the seed had low vigor.

本文从玉米种子萌芽特性入手，研究温度对它的影响，从而为玉米生产，特别是早春播种提供依据。1材料与方法1.1试验材料供试材料：农大10

If we transported that box to the Grand Canyon of Arizona and balanced it neatly on the low stone wall that keep people from breaking their necks when stunned by the incredible beauty of that silent witness of the forces of Eternity, and then called little Noodle,the dachshund,and told him(the tiny beast is very intelligent and loves to oblige) to give the unwieldy contraption a slight push with his brown nose,there would be a moment of crunching and ripping as the wooden planksloosened stones and shrubs and trees on their downward path, and then a low and even softer bumpity-bumpity-bump and a sudden splash when the outer edges struck the banks of the Colorado River.

如果我们将这个盒子运至亚利桑那州的大峡谷，并将它平放在一列低矮的石头墙上，然后唤来小路德，一只猎獾狗，并告诉它（这只小兽异常聪明且乐于助人）用软绵绵的棕色鼻子轻推一下这个笨重盒子，然后便是好长一段时间的碰撞和撕扯，就好像厚木板在下滑过程中松动岩石、灌木奔向未知的天堂。

Primers used in PCR were designed based on the sequence of mitochondrial 16S rDNA (AJ250642 and AF312718) and beta-actin (AY910691) of Eriocheir sinensis which had been deposited in GenBank. PCR analysis using total DNA from muscle, branchia, testis and sperm indicated that 16S rDNA exhibited different expression in the four samples. Beta-actin gene was detected plentiful in all the four tissues/cells and exhibited the same expression pattern. 16S rDNA gene amplification was detected at high levels in muscle and branchia, appreciable low in testis and very low in sperm. The PCR products of 16S rDNA gene were sequenced and aligned with the sequence of 16S rDNA from GenBank (AJ250642 and AF3 12718), and the alignment result showed there was no difference between them.

通过GenBank中的中华绒鳌蟹线粒体16S rDNA序列设计引物，利用PCR扩增方法，以beta-actin做内参，检测了中华绒螯蟹肌肉、鳃、精巢和精子中线粒体16S rDNA扩增情况，发现各组织或细胞beta-actin扩增片段大小、条带宽度和亮度基本一致，表明各模板DNA量基本一致；而在同一DNA浓度下，16S rDNA的扩增片段长度虽一致，但其产物量存在明显差异，精子16s rDNA产物量显著低于其他3种组织，其条带宽度和亮度很弱；16S rDNA扩增产物经测序分析及比对证明与已有序列完全吻合。

As most Chinese consumers have low levels of brand awareness, they also have low levels of brand loyalty.

由于大部分中国消费者有水平低，品牌意识，他们也有水平低，品牌的忠诚度。

Otherwise the populations of high niche breadths with the populations of low niche breadths may have more higher niche overlap,whereas low.

另外，高生态位宽度的种群与低生态位宽度的种群可能有较高的重叠值，反之则低。

The simultaneity use of Xiao Er Chuan Ke Ye and Cang Er Zi San intervening asthma and allergic rhinitis,comparing simply use Xiao Er Chuan Ke Ye,has the predominance in prolonging time of introducing asthma and reducing the frequency of nodding breathe,which indicated that the treatment of allergic rhinitis has great importance in asthma control and lessen the degree of asthma(frequency of rat nodding breath).3,The combination high-dose group has better therapeutic effect than dexamethasone group,all Chuan Ke Ye groups and combination low,medium group in the prevention and control of allergic rhinitis symptoms,reduced airway hyper responsiveness,while in improving breath difficulties combination high-dose group has similar effect with western medicine group,and better effect than all Chuan Ke Ye groups and combination low,medium group.Its efficacy increased with the prolonging of treatment time,but fewer side effects,which makes the application safer and more reliable.4,Xiao Er Chuan Ke Ye combining with Cang Er Zi San can obviously improve the pathological changes in rats with bronchial airway remodeling,reducing the serum TGF-β1,IL-4,ECP levels,increasing the level of serum IFN-γand the imbalance IFN-γ/ IL-4 ratio.

而运用小儿喘咳液合苍耳子散同时干预哮喘与过敏性鼻炎，较之单纯使用小儿喘咳液治疗哮喘，其在延长引喘时间、减少点头呼吸频度等方面有明显的优势，说明过敏性鼻炎的治疗，对于控制哮喘发生，减轻哮喘发作的程度，有着重要的意义。3、大剂量的合方在预防和控制过敏性鼻炎症状、降低哮喘气道高反应性方面疗效较地塞米松对照组、喘咳液各剂量组及合方小、中剂量组更优，而改善呼吸困难方面则与西药组相当，优于喘咳液各剂量组及合方小、中剂量组，且其疗效随着治疗时间的延长而增加，但副作用更少，使用更加安全可靠。4、小儿喘咳液合苍耳子散能明显改善气道重塑大鼠支气管的病理改变，同时降低血清TGF-β1、IL-4、ECP水平，提高血清IFN-γ水平及失衡的IFN-γ/IL-4比值。

Annual fees are as low as .09% of assets, which is breathtakingly low compared to the average mutual fund fees of 1.4%.

ETF的年费率为资产额的0.09％，相对与共同基金平均1.4％的费率来说是非常低的。

Therefore, from the flowering length, the effect of the climatic conditions and take the morphological structure, flowering length to the pollen of energy, energy, the seed vigor of pollen influence on some physiological indexes of determination to proven buckeye rate, low birth rate, low reason for improving the buckeye setting out the theoretical basis and reproduction rate, in order to improve the buckeye breeding take measures to meet the demand of the market.

因此，从花期长短，气候条件的影响等方面以及花的形态结构，花期长短到花粉活力，不同条件对花粉活力、种子活力的影响等一些生理指标的测定来探明七叶树结实率低、繁殖率低的原因，为提高七叶树的结实率、繁殖率找出理论依据，以便对提高七叶树的繁殖采取具体措施，满足市场的需求。还有这个标题：七叶树的生长开花结实特性初步研究谢谢了

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。