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- 与 by-time 相关的网络例句 [注:此内容来源于网络,仅供参考]
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"The syntactic relationship of a noun, a pronoun or a determiner to the other words of a sentence, indicated by declensional endings, by the position of the words within the sentence, by prepositions , or by postpositions."
一个名词、代词或一个限定词与一个句子中其它词的句法关系,通过词尾变化、这些词在句子中的位置、介词或者后置词表示出来。
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The syntactic relationship of a noun, a pronoun or a determiner to the other words of a sentence, indicated by declensional endings, by the position of the words within the sentence, by prepositions, or by postpositions.
格一个名词、代词或一个限定词与一个句子中其它词的句法关系,通过词尾变化、这些词在句子中的位置、介词或者后置词表示出来
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The syntactic relationship of a noun, a pronoun or a determiner to the other words of a sentence, indicated by declensional endings, by the position of the words within the sentence, by prepositions, or by postpositions.
格一个名词、代词或一个限定词与一个句子中其它词的句法关系,通过词尾变化、这些词在句子中的位置、介词或者后置词表示出来注意,注意力集中
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Nepalensis wall polysaccharide was prepared with hot water extraction,ethanol precipitation,dialyzation,and lyophilization.the crude polysaccharide was separated by deae-cellulose chromatography and purified by sephadex g-200 chromatography.the inhibit effect of the polysaccharide on lipid peroxidation of mice liver was conducted by tba method.the model of liver-injury induced by carbon tetrachloride(ccl4was used to validate the variety of the realated ast.results onefold ingredient polysaccharide was obtained after isolated and purified.conclusion the ingredient can remarkably inhibit lipid peroxidation of rat liver and significantly reduce activity of ast.
用热水提取,乙醇沉淀提取粗多糖,再经sevag法去除蛋白,透析去除小分子物质,冷冻干燥得楮头红多糖粗品;采用deae-52纤维素柱层析和sephadex g-200凝胶柱层析进行分离纯化;用tba法考察多糖的抗脂质过氧化作用;采用ccl4急性肝损伤模型,测定其血清中ast变化。结论获得一个楮头红多糖组分。tba法表明该组分对小鼠自发性脂质过氧化具有显著的抑制作用;在保肝试验中,给药组能明显抑制ast的升高,对肝损伤有一定的保护作用。
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The furnace body is made ф2200×1500 the outer covering main body by the 12mm steel plate, lower part the furnace body 45° the installment has the sensor, the sensor orientation silicon steel plate is made the weight 2 ton induction iron cores by Wuhan Steel Corporation Silicon steel plate Factory production top gear's W-151 the cold rolling 0.35m/m, primary is made the water cooling coil by 10×10×2 the copper pipe, and installs the stainless steel water cooling restricting, the power frequency has the core smelting furnace's metal melt fluid namely for the sensor sencondary coil, the entire electric stove is a transformer actually, the necessary 6 grades from the pair regulating transformer, shift gears by the electricity cabinet control, the voltage may from low to high, divide 6 promotions to arrive at 380V, each grade of voltages are different, the output is also different, the furnace temperature along with the files position is also different, but the height is different, adapts smelts colored or the black and so on melting point different metals, and may make the new furnace lining to smelt diamantine drying furnace fireproof.
炉体由12mm钢板制成Ф2200×1500外壳主体,炉体下部45°安装有感应器,感应器由武钢硅钢片厂生产的最高档的W-151冷轧0.35m/m取向硅钢片制成重2吨感应铁心,初级由10×10×2铜管制成水冷线圈,并安装不锈钢水冷保护套,工频有芯熔炼炉的金属熔液即为感应器的次级线圈,整个电炉实际就是一个变压器,配套一台6档的自耦调压变压器,由电柜控制换档,电压可由低到高,分6级升到380V,每档电压不同,输出功率也不同,炉温也随档位不同而高低不同,以适应熔炼有色或黑色等熔点不同的金属,并可作新炉衬耐火冶金砂烘炉之用。
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The furnace body is made ф2200×1500 theouter covering main body by the 12mm steel plate, lower part the furnace body 45° the installment has the sensor, the sensor orientation silicon steel plate is made the weight 2 ton induction iron cores by Wuhan Steel Corporation Silicon steel plate Factory production top gear's W-151 the cold rolling0.35m/m, primary is made the water cooling coil by 10×10×2 the copper pipe, and installs the stainless steel water cooling restricting, the power frequency has the core smelting furnace's metal melt fluid namely for the sensor sencondary coil, the entire electric stove is a transformer actually, thenecessary 6 grades from the pair regulating transformer, shift gears by the electricity cabinet control, the voltage may from low to high, divide 6 promotions to arrive at 380V, each grade of voltages are different, the output is also different, the furnace temperature along with the files position isalso different, but the height is different, adapts smelts colored or the black and so on melting point different metals, and may make the new furnace lining to smelt diamantine drying furnace fireproof.
炉体由12mm钢板制成Ф2200×1500外壳主体,炉体下部45°安装有感应器,感应器由武钢硅钢片厂生产的最高档的W-151冷轧0.35m/m取向硅钢片制成重2吨感应铁心,初级由10×10×2铜管制成水冷线圈,并安装不锈钢水冷保护套,工频有芯熔炼炉的金属熔液即为感应器的次级线圈,整个电炉实际就是一个变压器,配套一台6档的自耦调压变压器,由电柜控制换档,电压可由低到高,分6级升到380V,每档电压不同,输出功率也不同,炉温也随档位不同而高低不同,以适应熔炼有色或黑色等熔点不同的金属,并可作新炉衬耐火冶金砂烘炉之用。
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CO is used to produce formate,formic acid and oxalic acid by reacting with alkaline,in which the CO usually from coal vaporization is replaced by the CO from tail gas of yellow phosphorus production,by-reaction between thermal phosphoric acid and formate or oxalate to produce formic acid or oxalic acid,and by product dihydric phosphates.
提出用生产黄磷尾气中的CO与碱反应生产甲酸盐甲酸草酸,或利用热法磷酸和甲草酸盐反应生产甲酸草酸并副产磷酸二氢盐,继续加工可制得磷酸盐系列和碳一化工系列产品分析该磷化-碳一化工产业在节能减排降低投资与生产成本方面的优势,并简述了黄磷尾气杂质对产品质量的影响及尾气的净化方法
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Spiral Spirobifluorene acetylated is oxidated by m-chloroperoxybenzoic acid and hydrolyzed by sodium hydroxide ,obtaining 2,2 '- dihydroxy -9,9'- spiral Spirobifluorene .Through nitrification,Reduced by hydrazine hydrate, we may get the 2,2 '- diamino -9,9'- spiral Spirobifluorene which are characterizated by IR, 1H-NMR !
L-酒石酸和乙醇酯化得到酒石酸二乙酯,将保护羧基保护起来,然后用碘甲烷在2,3-位上两个甲基,得到2,3-二甲氧基-酒石酸二乙酯,再用氢氧化钠将其水解,得到2,3-二甲氧基-酒石酸,用五氯化磷将羧基酰化,得到2,3-二甲氧基- 1,4-丁二酰氯,经过与二环己胺反应,得到拆分配体2,3-二甲氧基–N,N,N',N'-四环己丁二酰胺。
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In chapter four, the preperation of ytterbium diiodide was examined. The reductive cleavage of Se-Se bond and S-S bond induced by ytterbium diiodide was investigated. The reaction of diselenides and disulfides with allylic bromide promoted by ytterbium diiodide was also examined. The intermolecular Barbier-type reaction induced by ytterbium diiodide was studied. In the last section of this chapter, the intermolecular reductive coupling of nitriles with azides induced by samarium diiodide was investigated.
第四章,研究了二碘化镱的制备方法,以及二碘化镱作为一种优良的单电子转移试剂在有机合成中的应用:二硒醚的Se--Se键和二硫醚S-S键的还原断裂,及其在合成烯丙基硒醚,硒代酯和烯丙基硫醚,硫代酯中的应用,实验结果表明二碘化镱也能促进分子间的Barbier反应,而文献认为二碘化镱不能促进分子间的Barbier反应;最后研究了二碘化钐促进的叠氮化合物与腈的交叉还原偶联反应,一步高收率地制备脒的方法。
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A highly ordered copper phthalocyanine-3,4',4",4"'-tetrasulfonic acid, tetrasodium salt/4,4'-dipyridyl dihydrochloride nanotube array was successfully fabricated by the layer-by-layer self-assembly technique using micropore anodic aluminum oxide as templates. The assembly process of the nanotube array was investigated by UV-Vis spectrometry, XRD and FT-IR, and the morphology of the nanotubes was analyzed by scanning electron microscopy and transmission electron microscopy, respectively.
在阳极多孔氧化铝模板中利用层层自组装技术制备出了高度有序的聚电解质磺化酞菁铜/4,4′-联吡啶盐酸盐纳米管,并对其组装过程用UV-Vis, XRD和FT-IR进行了分析,纳米管的微观形貌通过SEM和TEM进行表征。
- 相关中文对照歌词
- In The Sweet By And By
- By Heart, By Soul
- By & By
- In The Sweet By And By
- By & By
- Piece By Piece, Frame By Frame
- Sweet By And By
- In The Sweet By And By
- By And By
- I Want To Be Loved By You (But Only By You)
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。