一比二的

Thus, in order to attain acetal can be used as precursor of its matrix olefine aldehyde, 2-undecental glycol acetal was synthesized, and the corresponding optimum reaction conditions as: 2-undecental 0.2mol, glycol 0.3mol, cyclohexane as solvent, catalysed by vitamin C, the optium reaction time was 6h, its reaction yield could reach over 77.25%.

为了进一步探求效果更理想的前体化合物，本文继续合成了2-十一烯醛乙二醇缩醛，通过单因素优化实验得到最佳反应条件为：环己烷作溶剂，VC作催化剂，用量0.42%，醛醇物质的量之比0.2：0.3，反应时间6h，此条件下产品收率达77.25%。

It is equal to abandoned this part of material of nib lost and sharpens the saw-dust lost with the wooden pencil in fact, Because in 95%, the lead clothing pencil the raw materials utilization ratios of it material-saving the wrapping up core lead part removes the space of blind hole part of filling in backs end of pencil stub that are taken up of post of handle of pencil, The plumbaginous clothing material sharpens the saw-dust equivalent of material lost to consume with the wooden pencil basically, The pencil utilization ratio of raw materials produced with the timber is in 30-35%, a finished product pencil can only use two-thirds in using, Back one-third is abandoned, so the material-saving pencil is still pencil province of material-saving raw materials compared with wooden pencil.

被弃掉的笔头这部分材料实际上是与木制铅笔削掉的木屑是相等的，因为，节材铅笔它的原材料利用率在95%，铅衣包铅芯部分除去铅笔柄柱塞所占的铅笔头后端的盲孔部分的空间，铅衣材料基本和木制铅笔削铅衣削掉的木屑材料等量耗费的，而用木材生产铅笔的原材料利用率在30%-35%，一支成品铅笔在使用中只能使用三分之二，后三分之一被弃掉，所以节材铅笔与木制铅笔相对比还是节材铅笔节省原材料。

Methods Forty-eight healthy black and blue rabbits were chosen and divided into 6 groups at randomly. Experimental groups were performed surgery with CO2 laser sclerectomy in both eyes. Contents of nitric oxide and malonyldialohyed and the activity of Na(superscript +)-K(superscript +)-ATPase were tested with biochemical assays.

健康青紫兰兔48只，随机分为6组，实验组动物双眼均接受CO2激光外路巩膜切除术，化学比色法测定视网膜匀浆中一氧化氮、丙二醛的含量和Na-K-ATP酶的活性，进行统计学分析。

Miura was eclipsed by fellow Japanese climber Takao Arayama, who scaled the peak in 2006 and was just three days older than Miura was when he did it.

二00六年日本另一位登山客高雄新山，以比三浦年长三天的岁数爬上圣母峰，而取代三浦的头衔。

In general, Tetrigidae insect diversity was higher in southern China than northern China. We speculate that this pattern can be partially explained by the Pleistocene forest refuge theory and eco-environmental deterioration.

总体上来说，中国蚱科昆虫生物多样性南部比北部丰富，我们认为可从两方面来解释，一是更新世森林避难所的形成，二是生态环境的恶化。

Firstly, the relationships between electric conductivities of H3PO4-KH2PO4 solutions and temperature and molar ratio are studied.

一是研究了磷酸和磷酸二氢钾混合溶液的电导率随温度和摩尔比的变化情况。

Thorns pierced my face I do not care about, mosquito bite my eyes I do not care about, Python-wrapped my waist I do not care about, I finally caught enough of a bottle of fireflies, Then I put the bottle Firefly pegged at my house wall, in such a bright and me to study hard and continued until the second grade, I found that during the "Mother Firefly Firefly luminous than the public more observant," in the biologists to be attention.

荆棘划破了我的脸我不在乎，蚊子咬伤了我的眼我不在乎，巨蟒缠住了我的腰我不在乎，终于我逮够了一瓶子的萤火虫，然后我把这一瓶子萤火虫挂在我家墙上，在这样的光亮下我刻苦学习一直持续到二年级，期间我发现了&母萤火虫比公萤火虫发光更亮的规律&，得到了生物学家的重视。

In the second method, acetylene black was mixed with FePO4 in liquid during the process of aqueous precipitation, and then LiFePO4 was synthesized with the same condition.

研究结果表明：采用方法二合成的LiFePO4动力学及电化学性能比方法一合成的优。

Results show that the mullite grogs can be gained by the method at 1700℃ as long as the control of the chemical composition of ingredients(content of Al2O3 and ratio of Al2O3/ SiO2 ,etc.) with apparent porosity＜2.5% and bulk density≥2.75g/cm3; the heating process can be divided three stages, which are formation of primary mullite, secondary mullitization stage and liquid phase sintering stage.Key words bauxite, coal gangue, mullite grogs

结果表明，只要控制好混合料的化学组成（Al2O3含量、Al2O3/SiO2比等），就可采用此工艺制备出莫来石料，其烧结温度为1700℃，所得莫来石料的显气孔率大于2.5%、体积密度大于或等于2.75g/cm3；加热过程可分为一次莫来石形成、二次莫来石化和液相烧结3个阶段。

On December 16,1902,Orville Wright, an American, flew safely in a heavier-than-air machine for twelve seconds, He and his brother Wilbur had made a lot of experiments and had taken immense trouble to study the art of flying in gliders before they attempted to fly their aeroplane.

1902年11月16日，美国人奥维尔·莱特乘坐一架比空气重的飞机安全地飞行了十二秒钟。他和他的兄弟威尔伯在试飞之前进行了多次试验，不辞辛苦地用滑翔机钻研飞行技术。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。