氟
- 与 氟 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Those with plasticizers added to improve workability, were found to be incompatible with the fluoro carbon flotation fluids
改性的环氧树脂,即加入了可塑剂已改善操作性能的树脂,与氟碳化合物的浮液是不相容的。
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Those with plasticizer s added to improve workability, were found to be incompatible with the fluoro carbon flotation fluids
改性的环氧树脂,即加入了可塑剂已改善操作性能的树脂,与氟碳化合物的浮液是不相容的。
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Sewage pumps, liquor pump, self-priming pump, is clean water pump, hot water pumps, metering pumps, liquid pumps, potato starch pumps, beverage pump, pump defoamer, sugar pump, pipeline pump, strong pump, beer pumps, fluoride alloy pump, slurry pump, suction pump and so on many series, more than 1000 products with different specifications, but also the production of different specifications of models of flanges, valves.
污水泵,酒泵,自吸泵,is清水泵,热水泵,计量泵,药液泵,马铃薯淀粉专用泵,饮料泵,消沫泵,糖泵,管道泵,浓浆泵,啤酒泵,氟合金泵,渣浆泵,多吸泵等多种系列,1000多个不同规格的产品,同时还生产不同规格型号的法兰,阀门。
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Objective To study the effect of fluexetine plus cognitive behavior therapy in the treatment of depression.
文章摘要:目的观察氟西汀合并认知行为疗法对抑郁症的治疗效果。
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Under the basic condition, benzylacetone (1) was prepared by condensation with benzaldehyde and acetone.
以苯甲醛和丙酮为原料,氟化钾氧化铝作催化剂合成了苄叉丙酮。
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Benzine and Aspartame with sodium Fluoride - God I love to be poisoned first thing in...
汽油和阿斯巴甜与氟化钠-上帝,我爱中毒第一件事英寸。
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The method for synthesizing 2- benzofuran derivatives has easily available raw material, simple process, easy realization and high yield.
合成2位三氟甲基取代的苯并呋喃衍生物的方法,原料容易得到,合成工艺简单,易行,产率较高。
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Benzoin condensation using imidazolium based ionic liquids as solvent for the first time has been successfully achieved. The reaction conditions have been studied in detail. When under 65 and with 0.5 equiv. NaOH in ionic liquid l-butyl-3-methyl-imidazolium tetraborate, benzoin was obtained in excellent yield of 91%. Recycling of ionic liquid has been available.
首次探索并成功实现了在咪唑鎓盐离子液体中进行苯偶姻缩合反应,详细探讨了反应条件,当反应在65℃下和0.5当量NaOH存在下以及在离子液体4-丁基-1-甲基咪唑鎓四氟硼酸盐中进行时,苯偶姻产率可达91%;并对离子液体进行了有效回收再利用。
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The 3-chloro-4-trifluoromethoxy benzonitrile was synthesized from 3-chloro-4-trifluorome- thoxy aniline by diazotization, formaldoximation ,hydrolysis and cyanation.
以3-氯-4-三氟甲氧基苯胺为原料,经重氮化、甲醛肟化、水解和腈化反应得到纯度≥99。
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Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.
采用"一勺烩"方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。
- 推荐网络例句
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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.
此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。
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To get the business done, I suggest we split the difference in price.
为了做成这笔生意,我建议我们在价格上大家各让一半。
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After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.
一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。