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- Such is the case in pyrrole, thiophene, and furan. 吡咯,噻酚和呋喃的情况就是这样。
- Such is the case in pyrrole, thiophene, and furan . 吡咯,噻酚和呋喃的情况就是这样。
- The casting is cast in furan sand mould. 采用呋喃树脂砂型铸造。
- 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。
- Catalytic hydrogenation of pyrrole, furan and thiophene was investigated. 考察了常温常压下吡咯、呋喃和噻吩的催化加氢反应;
- Any of several drugs derived from furan that are used to inhibit bacterial growth. 硝基呋喃一种呋喃衍生药物,用来抑制细菌的生长
- We also investigated on the physical properties of these dibenzo[g,p]crysene derivatives, which includs UV, PL, CV, and quantum efficiency. 我们也对这些二联苯?衍生物进行一系列的物理性质研究,包括吸收波长、放光波长、量子效率以及循环伏安电位等。
- And it was shown that non solvent method was not suitable to synthesize the polybrominated aromatic amines. 实验还发现非溶剂法不适合于多溴代芳胺类化合物的合成。
- Chlorinated and brominated plastics is known worldwide to cause the emission of polychlorinated and polybrominated dioxins. 氯化和溴化塑料是全世界公认的会导致多氯联苯和多氯二恶英的排放。
- 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。
- Two amide type double armed crown ethers containing dibenzo 18 crown 6 unit were synthesized and their structures were confirmed by IR, 1HNMR,MS and elemental analysis. 合成了2个含二苯并-18-冠-6单元的酰胺型双臂冠醚化合物,其结构经IR、1HNMR、MS和元素分析确证,该2个化合物都不具有液晶性。
- The adsorption and desorption properties of CNA-875,CNA-795 and CNA-E adsorbents to furan were estimated and compared. 评价比较了CNA - 875、CNA - 795和CNA -E对呋喃的吸附解吸性质。
- 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 degree of furan removing and adsorbing capacity with CNA-795 in different regenerating conditions were mensurated. 测试了在不同再生条件下CNA -795对呋喃的脱除精度和吸附容量。
- 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。
- The chemical structures were characterized by the IR spectroscopy and elemental analysis,which provided the basis for further study on polybrominated bi... 产物经元素分析和红外光谱鉴定,确认是所设计的目标产物,这为研究多溴联苯类污染物的免疫分析奠定了基础。
- 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。
- These Regulations shall not apply to the applications of lead, mercury, cadmium, hexavalent chromium and polybrominated diphenyl ethers listed in Schedule 2. 2006年7月1日前投放市场的电气电子设备的维修备件或再使用,这些规定不适用;
- The author believes that China has possessed the capabilities of developing commercial furan phenol technology. 作者认为我国已具备开发呋喃酚工业化路线的能力。
- Polybrominated diphenyl ethers (PBDEs) as flame retardants in polymeric materials for fire safety of home products are new global environmental pollutants. 摘要多溴联苯醚(PBDEs)作为阻燃剂广泛用于家庭消费品中,是正在受到全球关注的新环境污染物。