furan造句
1. Such is the case in pyrrole, thiophene, and furan.
2. The casting is cast in furan sand mould.
3. The bad yield ability of the furan no bake sand is the main reason of the stress hot tear formation.
4. The degree of furan removing and adsorbing capacity with CNA - 795 in different regenerating conditions were mensurated.
5. By decreasing the grade of cast iron, using furan resin selfsetting sand as a substitute for clay sand to make the core and prolonging cooling time in mould, the cracking problem has been solved.
6. Furan resin bonded sand is poor in collapsibility when it is used for non-ferrous metal casting, especially for thin section castings and heavy walled cores.
7. Manufacturing method of a self - furan resin sand binder for environment protecting and its application was introduced.
8. Compared with the optical Kerr effect of the furan homologues, pyrrole homologues are good nonlinear optical materials in application prospect.
9. A suitable ratio of ammonia to furan was about 10 suggested by experiments.
10. Compared with that of furan resin bonded sand, the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.
11. The structure changing after hardening reaction of furan resin was systematically investigated using infrared spectroscopy.
12. The review of recent research progresses of furan resin was presented and discussed.
13. The design and construction technique for furan resin concrete whole ground anticorrosion performance are introduced.
14. A novel technique for preparing furan through decarbonylation of furfural developed by Shanxi Institute of Coal Chemistry was described in detail.
15. Furan resin sand is poor in collapsibility when it is used for Al alloy casting, specially for some large, thin section castings.
16. Experiments demonstrated that Anti-2- nonyl olefin aldehyde, furan aldehyde and 2-methyl aldehyde etc. had direct relation with aging flavor.
17. Pyrrole, imidazole and furan are biodegradable organics, and pyridine are poor biodegradable organics.
18. HL series of shoe adhesives, since the hard Furan Resin, cashew oil.
19. Ding of ? of furan ?B750 can cause a new life red blood cell is deliquescent , tall bilirubin blood disease and nucleus are icteric, gravid and terminal unfavorable also use.
20. With acrylamide, caffeine, furan, and mycotoxin poison in a cup of coffee, you probably think nothing more could be wrong with coffee.
21. Behaviors of the catalyst for furfural decarbonylation to furan were studied by adding promoters and changing the ways of packing.
22. Synthetic technology of furfuryl-alcohol and furfurol furan resins with amido-sulphoacid, production and application of furan mastic are described.
23. With the increasing of the stress, the micro-cracks propagate and stress hot tears form. The bad thermal conductivity of the furan no bake sand is the main reason of the shrinkage hot tear formation.
24. The method was applied to the calculation of the ring bond angles of furan, pyrrole, and coumarin. The calculated results are in good agreement with the experimental data.
25. It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.
26. Zhangjiagang Dingfeng Foundry Material Co. , Ltd. was established in 1988, which is professional in producing furan resin, sulfoacid firming agent for casting and other supporting materials.
27. The made tea fertilized with urea possessed higher contents of aldehyde, ketone, furan, pyrazine and pyrrole, but lower aromatic index.
28. Get together the important raw material that 4 hydrogen furan is manufacturing blackribbon and polyurethane material.
29. The ether soluble compounds of the reaction product were analyzed by GC/MS. The major iden tified compounds were pyrazine and furan compounds.
30. The adsorption and desorption properties of CNA - 875, CNA - 795 and CNA - E adsorbents to furan were estimated and compared.
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