Like furan, thiophene is aromatic.
和呋喃一样，噻吩是芳香性的。
The casting is cast in furan sand mould.
采用呋喃树脂砂型铸造。
Such is the case in pyrrole, thiophene, and furan.
吡咯，噻酚和呋喃的情况就是这样。
Process control of furan resin-bonded sand self-curing technology.
呋喃树脂自硬砂生产工艺过程控制。
The review of recent research progresses of furan resin was presented and discussed.
综述了近年来呋喃树脂的研究进展。
Furan, benzofuran, and vinyl acetate were classified as possibly carcinogenic to humans.
呋喃，苯并呋喃，醋酸乙烯酯被列为可能对人类致癌。
A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.
用糠醇和糠醛缩聚制备了新型呋喃树脂。
The present invention relates to regiospecific Furan Compounds and Their Use in Fragrances.
本发明涉及区域专一的呋喃化合物及其在芳香剂中的用途。
The mechanism was discussed in the proton acid catalytic reaction of furan phenol cyclization.
探讨了呋喃酚环合反应质子酸催化机理。
Pyrrole, imidazole and furan are biodegradable organics, and pyridine are poor biodegradable organics.
吡咯、咪唑、呋喃为可降解有机物，吡啶为难降解有机物。
The effect of the amount of furan resin on the morphology of composites was studied with the help of SEM.
利用SEM分析了树脂含量对复合材料表面形貌的影响。
An anticorrosion method of using modified water glass concrete lining of furan resin for saturators is introduced.
介绍了一种对饱和器采用呋喃改性水玻璃混凝土衬里的防腐蚀方法。
A liquid aldehyde with a penetrating odor; made from plant hulls and corn cobs; used in making furan and as a solvent.
一种带渗透性气味的液体醛，用植物外壳和玉米芯制取，用于制呋喃或用作溶剂。
The reason causing nodularization degeneration in surface layer of furan resin sand nodular iron castings was analyzed.
对呋喃树脂砂球墨铸铁件表层球化衰退原因进行了分析。
Authors introduces an example of applying no-bake furan resin sand technology to large-scale and high-efficient molding line.
介绍了一种把呋喃树脂自硬砂工艺应用于大批量、高效率造型线的实例。
The design and construction technique for furan resin concrete whole ground with good anticorrosion performance are introduced.
较详细阐述了贵溪冶炼厂呋喃树脂混凝土整体地面的设计和施工技术。
Furan resin sand is poor in collapsibility when it is used for al alloy casting, specially for some large, thin section castings.
呋喃树脂砂用于铝合金铸造时，特别是对于一些大型、薄壁铝合金铸件，型芯的溃散性较差。
The abnormal structure usually appears at the surface layer of nodular iron castings produced by furan-sulfonic acid cured sand mold.
通过实验研究，用甲苯磺酸作催化剂的呋喃树脂自硬砂与稀土镁作催化剂生产的球铁件，通常在其铸件表层出现异常组织。
Novel furan polyols, use thereof as polyols in formation of polyurethanes, polyurethanes thus obtained and process for preparing same.
新型呋喃多元醇，作为合成聚氨酯的多元醇，所制得的聚氨酯及其制备方贩。
The structure changing before and after hardening reaction of furan resin was systematically investigated using infrared spectroscopy.
采用红外光谱法等分析测试手段对呋喃树脂在硬化反应前后的结构变化进行了系统研究。
The conclusions are employed in cold-setting furan resin sand mould (core) in production of cylinder block of heavy marine diesel engine.
所得结果在呋喃树脂自硬砂型（芯）大型船用柴油机缸体铸铁件生产中得到验证和应用。
Experiments demonstrated that Anti-2- nonyl olefin aldehyde, furan aldehyde and 2-methyl aldehyde etc. had direct relation with aging flavor.
经实验证明反-2-壬烯醛、呋喃醛、2-甲基醛等与老化味存在着直接关系。
Compared with the optical Kerr effect of the furan homologues, pyrrole homologues are good nonlinear optical materials in application prospect.
与呋喃同系物的光克尔效应相比，吡咯同系物是具有良好应用前景的非线性光学材料。
In this thesis, we have focused on the synthesis of highly substituted furan by the cycloaddition reaction of conjugated enynones with nitrones.
本论文是关于共轭烯炔酮与硝酮化合物反应生成多取代的呋喃化合物的研究，主要从三个方面进行了研究。
A novel technique for preparing furan through decarbonylation of furfural developed by shanxi institute of coal chemistry was described in detail.
并详细评述了山西煤炭化学研究所的糠醛脱羰制呋喃的新工艺。
A novel technique for preparing furan through decarbonylation of furfur al developed by shanxi institute of coal chemistry was described in detail.
并详细评述了山西煤炭化学研究所的糠醛脱羰制呋喃的新工艺。
Carbasugars carbocyclic analogues of true sugars are compounds in which the ring-oxygen of furan oid or pyranoid sugars is replaced by methylene group.
摘要碳环糖是一类呋喃或吡喃糖环中的氧原子被亚甲基取代后形成的糖类似物。
Carbasugars carbocyclic analogues of true sugars are compounds in which the ring-oxygen of furan oid or pyranoid sugars is replaced by methylene group.
摘要碳环糖是一类呋喃或吡喃糖环中的氧原子被亚甲基取代后形成的糖类似物。
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