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The results were asfollows:When the ratio of HY zeolite to raw material was 2.5g/100mL and thereaction was heated to 140℃for 4h,the effect of isomerization of turpentinewas better, the conversion rate of pinene was 97.02%,and the selectivity ofcamphene was 42.88%.When the ratio of HZSM-5 zeolite to raw material was4.5g/100mL and the reaction was heated to 140℃for 4h,the effect ofisomerization of turpentine was better, the conversion rate of pinene was86.24%,and the selectivity of camphene was 46.95%.
结(来源:A45BC论ba文网www.abclunwen.com)果表明:HY型沸石分子筛催化,当其用量为2.5g/100mL原料,反应在140℃下维持4h时,松节油的异构化效果较好,蒎烯转化率达97.02%,莰烯选择性为42.88%;而HZSM-5型沸石分子筛催化,当其用量为4.5 g/100mL原料,反应在140℃下维持4h时,松节油的异构化效果较好,蒎烯转化率达86.24%,莰烯选择性为46.95%。
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The results showed with the increasing of NaCl concentration, the phenomenon of carnification could be found in the leaves of Arabidopsis thaliana . Under the stress of NaCl lower than 100 mmol/L, the tissue structure of root had no distinct difference from the control. When the concentration of NaCl was higher than 250 mmol/L, the stained color of safranine was deep but not even, and color in fibrovascular tissue and peripheral cortex cell were deeper than that around fibrovascular tissue.
当NaCl浓度小于100 mmol/L时,根组织结构与对照未表现出明显的差异;但当NaCl浓度达到250 mmol/L时,根组织结构对番红染料的着色较深而且不均匀,维管组织和外围皮层细胞着色较深,而维管组织周围的细胞着色较浅。
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And quickly revived again the moment the director shouts,"Cut!". My colleague quickly pounced towards me with a cashmere shawl to keep me warm and leapt away the moment MV director instructed to start.
说也奇怪,当导演喊开始时我停止我的颤抖彷佛死去般没有知觉,当导演喊"cut"时很快又恢复生机盎然,拍摄空档我的同事很快飞奔迎向我让我披上羊毛披巾给我取暖。
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When you execute, it finds your cd rom and if there is a music cd in it, it shows track numbers and track names.
当你执行时,它搜索你的cd rom,当有一首歌曲cd在里面时,它显示音轨的数量和名称。
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When ovule orientation is orthotropous the chalaza corresponds to the point where the funicle is attached but in anatropous and campylotropous ovules the chalaza is some distance from the funicle.
当胚珠的方向是直生胚珠时,合点和珠柄连成一条直线,当胚珠是倒生胚珠或弯生胚珠时,合点和珠柄之间有一定的距离。
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Using such methods as geochemistry engineering,plant reclamation technology etc,to make the harmful element harmless or to remove the harmful elements can effectively prevent the detonation of "the chemical time bomb" and eliminate the threat of "time bomb".
化学物质在土壤中的累积与储存,在相当长的时间内不表现为危害,但当储存量超过土壤或沉积物承受能力的限度时,或者当气候、土地利用方式发生改变时,原本稳定的化学元素会突然活化,导致
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He had been sitting with her, it appeared, most companionably at home, till her usual hour of exercise; and on being desired to chuse their walk, immediately fixed on Highbury.
小学生的情感总是在一定的环境中产生的,当他们受到周围环境事物的感染时,就会产生强烈的兴趣,当内心涌起不能抑制的情感时,他们便想用语言文字表达出来。
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Finally it analyzes the feasibility that using hydromechanics to analyze traffic flow by contrasting various characters between traffic flow and fluid flow. It analyzes influence of road alignment to basic expressway segment capacity by hydromechanics, and obtains viscous resistance and viscous movement differential equation when the vehicle drives on circular curve segment of expressway. And it infers that viscous resistance is correlated with sideway force coefficient, slope of crown and radius of circular curve. Radius of circular curve, sideway force coefficient and slope of crown are bigger, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on nearside lane of circular curve; but radius of circular curve and sideway force coefficient are bigger, slope of crown is smaller, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on fast lane of circular curve.
最后通过对比交通流与流体流的相似性,运用流体力学分析了道路线形对快速路基本路段通行能力的影响,求出了车辆在曲线路段的粘性阻力,建立了车辆在曲线路段的粘性运动微分方程,并由此推知,粘性阻力与横向力系数、路拱横坡度和圆曲线半径都有关系,当车辆在圆曲线外侧车道上行驶时,圆曲线半径、横向力系数和路拱横坡度越大,粘性阻力就越小,对道路的通行能力影响就越小;而当车辆在圆曲线内侧车道上行驶时,圆曲线半径和横向力系数越大,路拱横坡度越小,粘性阻力就越小,对道路的通行能力影响就越小。
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Because of having the property of circular symmetry, the prism assembly is easy to be achieved in the mechanical structure.
当它们作为一个整体时,是一个圆束偏器,能起到稳定光轴的作用;当它们作为二个个体时,是像旋转器,能起到消除像倾斜的作用。
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On one hand, a person needs to be given some political rights before he is able to perform his civic duties.
的忠诚区别开来,只有当领袖和政府的利益与全体人民的利益相一致时,当他们能够真正代表"国家"时,爱国主义才延及他们。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。