词语导航
基本信息
词语：环二氧
繁体：環二氧
拼音：huán èr yǎng
英语翻译
【化】 epidioxy-
分词翻译
环的英语翻译：
annulus; hem in; link; loop; ring; surround
【计】 ring up; toroid
【化】 ring
【医】 annuli; anulus; band; circle; circulus; cycle; cyclo-; gyro-; loop; orb
ring; verge
二氧的英语翻译：
【化】 dioxygen
翻译例句
1. 同时还研究了催化剂用量、1,4二氧六环的用量、溶剂种类、反应温度、反应时间、水量及加水方式等对该反应的影响。
The reaction conditions such as dosages of catalyst, 1, 4 dioxane and water, solvent type, reaction temperature and time, adding method were also studied.
2. 在二氧六环的解决办法是通过蒸发浓缩和剩余油是在真空中蒸馏水上热水澡。
The dioxane solution was concentrated by evaporation and the remaining oil was distilled in vacuo on a water bath.
3. 结果表明，二氧六环木素与过氧化氢反应后的降解产物中羰基明显增多，而且生成了醌型物质。
The results showed that carbonyl groups in degradation products obviously increased and quinoid matters were produced when dioxane lignin reacted with hydrogen peroxide.
4. 这些表面活性剂具有较高的表面活性和相同的亲水基，1 ，3二氧杂环戊烷基团也有一定的亲水性。
The results showed that these surfactants have high surface activity and same hydrophilic group, and the 1,3dioxolane ring are also hydrophilic.
5. 目的：研究慢性低氧高二氧化碳对大鼠肺动脉环氧酶- 2 (COX - 2)基因表达的影响。
Aim: To study the effect of chronic hypoxic hypercapnia on expression of COX-2 mRNA in pulmonary arterioles.
6. 此外，对BDMN及二氧六环在汞电极上的吸附现象也进行了研究。
The adsorption of BDMN and solvent (dioxane) on the dropping mercury electrode has also been studied.
7. 使用均质和复合壳聚糖膜对二氧六环-水和丙酮-水溶液的渗透汽化分离性能进行了研究。
Pervaporation separation of dioxane-water and acetone-water mixtures has been studied by use of chitosan homogeneous and composite membranes.
8. 测定了在水、乙醇、二氧六环中的紫外吸收光谱与克分子消光系数以及萤光光谱和量子产率。
The ultraviolet absorption spectra and molar extinction coefficients, fluorescent spectra as well as quantum yields of nucleoside hydrazones in water, ethanol and dioxane were measured.
9. 采用金属钙、脱水液氨、载体纳米二氧化硅及改性剂乙腈与环氧丙烷制备出氨钙体系催化剂。
Calcium ammine catalyst was prepared with metal calcium, dehydrated liquid ammonia as raw materials, nano-silica as a carrier and acetonitrile and propylene epoxide as modifiers.
10. 以负载型氧化物为催化剂，研究了二氧化碳在超临界条件下，与甲醇和环氧丙烷一步合成碳酸二甲酯的反应性能。
A study was made on synthesis of dimethyl carbonate with one step from supercritical carbon dioxide, methanol and propylene oxide over supported oxides.
11. 在二氧六环中它们的量子产率为0.4左右。
Their quantum yields were about 0.4 in dioxane.
12. 利用二甘醇为原料，一水硫酸氢钠为催化剂合成了1，4 二氧六环。
The synthesis of 1,4dioxane employing the diethylene glycol as raw material and sodium bisulfate monohydrate as catalyst was discussed.
13. 但聚二氧六环酮的结晶度较高，不适合直接用做药物控释材料，需要与其他单体进行共聚以改善其亲水性和结晶性等性质。
Poly(p-dioxanone) has high degree of crystallinity which limited it to copolymerize with other monomers to be used as controlled drug release materials.
14. 确定了1,4 -二氧六环中所含的杂质，对共沸精馏法分离及提纯1,4 -二氧六环有重要指导价值。
Impurities in the dioxane were determined. The analysis method has important directive value for separating and purifying 1, 4-dioxane with azeotropic rectification.
15. 本发明公开了一种通过催化活化二氧化碳与环氧烷烃共聚反应合成聚碳酸酯的高活性催化剂。
The invention discloses a high-activity catalyst which catalyzing and activating carbon dioxide to perform the copolymerization reaction with alkylene oxide to synthesize polycarbonate.
16. 本发明涉及一种二胺类化合物的合成方法，尤其涉及一种（4R，5R）-4，5-双（氨甲基）-1，3-二氧戊环类化合物的制备方法。
The present invention relates to one kind of diamine compound synthesizing process, and is especially preparation process of (4R, 5R)-4, 5-bis(aminomethyl)-1, 3-dioxolane compounds.
17. 推导了异戊二烯在环已烷-二氧六环混合溶剂中的负离子聚合机理，并通过实验进行了验证。
The mechanism of anionic polymerization of isoprene with cyclohexane and dioxane as solvent was studied and improved by experiment.
18. 采用这种方法，在氯化钠的加料量为7.5%，分子筛和精制产品合适的加料比例为1：1时，产品纯度可达99.9%，满足二氧五环产品的质量要求。
Under the condition of sodium chloride feeding ratio 7.5%, molecular sieve and refined product feeding ratio 1:1, the DOL product purity was up to 99.9% which had met the product quality requirements.WWW.weNtIyI.com
19. 将异丁醛与1,4丁烯二醇缩合得到产物二氧七环，对产物进行了元素分析和IR分析。
The condensation compound was synthesized by 2 butene 1, 4 diol and iso butyric aldehyde, and was characterized by elemental analysis and IR.
20. 可吸收的6，6-二烃基-1，4-二氧杂环庚烷-2-酮及其环状二聚物的共聚物和混合物。
Absorbable copolymers and blends of 6,6, -dialkyl-1,4-dioxepan-2-one and its cyclic dimer.
21. 双氢化牛脂基仲胺主要用于除草剂、二氧杂环乙烷聚合物的稳定剂、纤维的防水剂、抗静电剂和柔软剂等方面。
Mainly used in herbicide, two heterocyclic oxygen ethane polymer stabilizers, waterproofing agent, antistatic agent and softening agent of fiber, etc.
22. 介绍了双环原酸酯个4-羟甲基-2，6，7-二氧杂二环（2．2．2）辛烷的合成方法，并提供了一条简单可行的合成途径．。
This paper introduces the synthesis of 4-(acryloxymethy1)-2, 6, 7-trioxiabicyclo (2.2.2)octane, and presents a simple way to characterize it.
23. 以二氧化碳3环氧丙烷为原材料，在双金属氰化物催化剂催化下，利用环流反应器合成聚碳酸亚丙酯多元醇。
Poly (propylene carbonate) polyols was synthesized by the copolymerization of carbon dioxide with propylene oxide in the presence of double metallic catalyst in loop reactor.
24. 以二氧化碳3环氧丙烷为原材料，在双金属氰化物催化剂催化下，利用环流反应器合成聚碳酸亚丙酯多元醇。
Poly (propylene carbonate) polyols was synthesized by the copolymerization of carbon dioxide with propylene oxide in the presence of double metallic catalyst in loop reactor.
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