查询词典 3-D
- 与 3-D 相关的网络例句 [注:此内容来源于网络,仅供参考]
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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。
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The relationship between glycosidic precursors and its aroma components was studied. The results showed: The dominant aroma constituents in aroma oil of jasmine tea include benzyl acetate, linalool, methyl antyranilate, cis-3-hexenyl benzoate, benzyl alcohol, indole, farnisene, methyl benzoate, methyl salicylate, geraniol, cis-3-hexenyl-acetate etc.; and the higher the concentration of these components is, the higher the quality of jasmine tea is.
结果表明:茉莉花茶香精油中,含量较高的有乙酸苄酯、芳樟醇、邻氨基苯甲酸甲酯、苯甲酸顺-3-己烯酯、苯甲醇、吲哚、法尼烯、苯甲酸甲酯、顺-3-己烯酯、水杨酸甲酯、橙花叔醇、乙酸顺-3-己烯酯、香叶醇;这些成分的含量随花茶品质的提高而增多;研究表明,花茶的高含量香气成分也是茉莉花中的主要赋香成分。
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The results show that bovine serum albuminrejection ratio and breaking stress of the composite membrane are 86.67% and 4.70 MPa,which are improved greatly compared to those 3.27% and 3.35 MPa of the pure PVDF membranes.
结果表明复合膜的性能与纯PVDF膜的相比有显著的改善,其中对牛血清白蛋白的截留率从 3.27%提高到86.67%,单根纤维的断裂应力从3.35MPa提高到4.70MPa ,提高了40.3%。
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Nutlets 4, semiglobose-tetrahedral or subulate trigonous-tetrahedral, shiny, glabrous or pubescent, rarely tuberculate, adaxial 3 surfaces subequal in size or bottom smaller than 2 lateral surfaces, longitudinal vein at juncture of 2 lateral surfaces, sessile or with a short carpophore from corner of 3 adaxial surfaces, abaxial surfaces flattened or convex, acute or obtuse ribbed, rarely narrow winged; attachment scar at bottom of carpophore or at corner of 3 adaxial surfaces when sessile.
小坚果4,三棱四面体,发亮的半球形四面体或钻形,无毛或被短柔毛,具瘤,正面3 表面大小近等或者最后的小于2侧面的很少,在2侧面的接合的纵向脉,角落的3正面的在底部附件痕的果瓣柄或什么时候无梗。
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3 The magnetic oil level meter with the alarm contacts of low oil level is installed on the end of the oil conservator box.
3.3.3.8.8.3 设置有低油位报警触点的磁力油位表,安装在油枕箱端部上。
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Bond markets continued to gyrate Thursday after a sharp run-up in 10-year Treasury yields the day before. The bond market pushed yields of 10-year Treasurys down to 3.674% from 3.70% Wednesday, but they remain well over mid-March's 2.5% level.
继美国国债收益率周三大幅上扬后,债券市场的收益率周四仍在高位徘徊。10年期美国国债的收益率从周三的3.70%下跌至周四的3.674%,但仍远高于3月中旬时2.5%的水平。
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It was discovered that this modified kaolin had ideal capability of removing arsenic from water because of its giant active surface and coordinate action, intensify, for arsenate ions AsO(superscript 3- subscript 4 and Fe(superscript 3+) fixed on the framework, and achieving the aim of removing the minimal content of arsenic from the water.
以高岭土为原料通过碱熔合成得到类似于分子筛的笼状骨架结构,并将Fe(上标 3+)通过离子交换吸附,负载在其骨架上,实现改性;利用改性后的吸附剂具有大的活性表面积,以及砷阴离子AsO(上标 3-下标 4与Fe(上标 3+)的强配位能力,实现了基于配体交换的固液分离的从微量含砷水中去除砷。
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Placement of late-span value is still an opportunity in the area in large numbers are more optimistic about the first 015 out cross-4,5,6,7,8, 2,3 cross-trumpet area to consider doing less, No. 016 concerns 4, 6,7,8,9 cross-out, rule out the possibility of three cross-value occurs, the first 017 candidates span the value of cross-3,5,6,7,9, 4,8 even cross there is little hope.
后期跨度值仍落点于中大数区的机会较多,第015期看好4、5、6、7、8跨开出,小号区2、3跨少做考虑,第016期关注4、6、7、8、9跨开出,排除3跨值出现的可能,第017期候选跨度值为3、5、6、7、9跨,偶数4、8跨出现希望不大。
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Nation and importing metal original material of region, for example:Stainless steel(SUS301, SUS304),Carbon steel(50#, 60#, S45C, S50C, S60C, S65C, SK2, SK4, SK5, SK7), Cube(C17200), the Nie cupronickel (C7521)waits various card number, the metal book material and plank material of different material, thickness scope(0.05 mm~5.00 mm), width scope(3.00~1500 mm) and degree of hardness Class(1|4 H, 1|2 H, 3|4 H and H, EH and SH), the product quality presses the standard of Japan JIS strictly a control.
本公司主要销售日本、韩国、台湾等国家及地区的进口金属原材料,例如:不锈钢(SUS301、SUS304)、碳钢(50#、60#、S45C、S50C、S60C、S65C、SK2、SK4、SK5、SK7)、铍铜(C17200)、洋白铜(C7521)等各种牌号、不同材质、厚度范围(0.05mm ~ 3.00mm)、宽度范围(3.00 ~ 1500mm)、硬度级别(1/4H、1/2H、3/4H、H、EH、SH)之金属卷材及板材,产品质量按日本JIS标准严格控制。
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Among the 6 recurrent cases, one had new coronary artery lesions; three had expanding coronary artery lesions. Among the 3 cases that recurred within 2 months, IVGG and ASA had not been used in one case, and ASA was reduced to low dose just 3 days after defervescence in 2 cases. The cases that recurred within 2 months were more likely to occur in which ASA was reduced to low dose just 3 days after defervescence than those in which gradually.
再发病例6例,其中1例有新的冠状动脉损害形成,3例原有冠状动脉损害加重。3例在初发病2月内再发者,其中1例未用IVGG及ASA治疗,2例热退后ASA快速减量。
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- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。