关于高中化学的英语作文_专业高分英语作文5篇

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关于高中化学的英语作文_专业高分英语作文5篇

关于”化学“的英语作文范文5篇,作文题目:Chemistry。以下是关于化学的专业英语范文,每篇作文均为高分范文带翻译。

高分英语作文1:Chemistry

Liu Ming is my chemistry teacher. He is an ordinary little man with thick glasses, but he has a strange way to make his class lively and interesting. I remember his first class.

He put three bottles on the table, one filled with kerosene, one with castor oil, and one with vinegar. He said, "now be careful, pay attention to everything I do." He held up a finger, mixed the three liquids in a large glass. After a few seconds, he took it out, put it in his mouth, and took a sip.

"You have to do everything I do. How delicious," he said, and then we made a face like him. The mixture tasted terrible.

This was the first chemistry lesson, and I'll never forget it. ".

中文翻译:

刘明是我的化学老师他是一个普通的小个子,戴着厚厚的眼镜,但他有一种奇怪的方式使他的课生动有趣我记得他的第一堂课他把三个瓶子放在桌子上一个装满煤油,一个装满蓖麻油,还有一个是醋,他说“现在小心点,注意我做的每件事。”他举起一个手指,把三种液体混合在一个大杯里几秒钟后,他把手指拿出来,把它放进嘴里,吸了一口,“你必须做我做的每件事多么美味”他说,然后我们像他一样做了一张脸,混合物尝起来很难吃,这是第一堂化学课,我永远不会忘记它。”。

万能作文模板2:化学

Using sucrose as raw material, concentrated hydrochloric acid as catalyst and Acidifier, the molar / LG / lmin was determined by microwave method. The intermediate product hydroxymethyl furfural was reacted with decarboxylation to produce levulinic acid and formic acid by-products. The results showed that the reaction time of levulinic acid and formic acid by-products was the longest under the conditions of hydrochloric acid concentration of 4 mol / L, sucrose concentration of g / L and microwave power of 5 minutes, and the acid production rate was significantly improved compared with the literature value.

中文翻译:

以蔗糖为原料,浓盐酸为催化剂和酸化剂,采用微波法测定摩尔/Lg/Lmin,以中间产物羟甲基糠醛和脱羧反应生成乙酰丙酸和甲酸副产物。实验结果表明,在盐酸浓度为4mol/L,蔗糖浓度为g/L,微波功率为5分钟的条件下,合成了乙酰丙酸和甲酸副产物反应时间最长,产酸率较文献值有明显提高。

满分英语范文3:化学

The effects of microporosity and chemical surface of adsorbent on phenol adsorption were studied. Ab8d was determined by ASAP method The surface chemical properties of nkaii and D resins were determined by X-ray diffraction. The adsorption isotherms of phenol on the polymer resins were studied by inverse gas chromatography (IGC) and diffusion infrared Fourier transform spectroscopy (drift static equilibrium adsorption experiment).

The results showed that nkaii and ab8 resins had higher BET specific surface area and microporous volume, while D and D resins had higher BET specific surface area and microporous volume. The results showed that nkaii resin had lower BET specific surface area and microporous volume. The results of igce showed that nkaii resin had a higher adsorption free energy ratio for polar acetone and benzene probe, so it had a stronger surface polarity than other polymer resins.

The adsorption isotherm of phenol on nkaii resin was significantly higher than that of other resins. This is because nkaii resin has the strongest surface polarity and the largest micropore volume. The experimental results show that the adsorption of phenol on the resin depends largely on the microporous structure and surface chemical properties of the resin.

Good micropores and strong surface polarity will improve the adsorption of phenol on the polymer resin.

中文翻译:

本文研究了吸附剂的微孔度和化学表面对苯酚吸附性能的影响,用ASAP法分别测定了AB8D NKAII和D树脂四种树脂的结构参数,并用X射线衍射法测定了这些树脂的表面化学性质采用反相气相色谱法(IGC)和扩散红外傅里叶变换光谱法(漂移静态平衡吸附实验)研究了苯酚在聚合物树脂上的吸附等温线。结果表明,NKAII和AB8树脂具有较高的BET比表面积和微孔体积,而D和D树脂具有较高的比表面积和微孔体积结果表明,NKAII树脂具有较低的BET比表面积和微孔体积。IGCE实验结果表明,NKAII树脂对极性丙酮和苯探针具有极高的吸附自由能比组分,因而比其他聚合物树脂具有极性强的表面极性苯酚在NKAII树脂上的吸附等温线明显高于其它树脂,这是由于NKAII树脂的表面极性最强,微孔体积最大。

实验结果表明,苯酚在树脂上的吸附很大程度上取决于树脂的微孔结构和表面化学性质良好的微孔和强的表面极性将提高苯酚在聚合物树脂上的吸附爱思唯尔版权所有关键字:聚合树脂苯酚孔隙率表面化学反相气相色谱法。

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