查询词典 addition-compound

Zirconia/graphite compound mold core was prepared by the coating, in which the silicon sol was used as binder and zirconia was used as refractory materials. The application feasibility of metal particles as a coolant in the solidification process was studied, and the application of metal particles as subsidiary coolant in the liquid metal cooling of directional solidification were analyzed and studied in this investigation. The conclusions can be drawn as follows: 1 The zireonia/graphite compound cores fabricated by brushing coating which was prepared by making silicon sol agglutinated zirconia as a refractory material were casteded at 800℃and 1000℃respectively, and the results show that the strength of the mold core is strong enough to meet the requirement of practical casting.

本文研究了以硅溶胶为粘结剂，氧化锆为耐火材料来制备氧化锆／石墨复合型芯的制备工艺；并分析了金属颗粒作为冷却剂在金属凝固过程中应用的可行性、金属颗粒的冷却能力以及金属颗粒作为辅助冷却剂在定向凝固的液态金属冷却法中的应用，得出以下结论：(1)以硅溶胶为粘结剂，氧化锆为耐火材料来配制涂料，采用刷涂石墨型芯的方法来制备的氧化锆／石墨复合型芯经800℃和1000℃实际浇铸实验，结果证明型芯的强度足够满足实际浇铸要求。

The result form the principal component analysis of pollution factors by SPSS shows that the increasing of sulphur dioxide, nitrogen oxide compound and falling dust particles results in the decrease of the Total Suspended Particles, and the aggrandizing of nitrogen oxide compound and TSP leads to the reduction of falling dust particles.

并应用SPSS软件时公路污染因素进行主成分分析，得出了二氧化硫、氮氧化物和尘降的增加会相应导致TSP减少，氮氧化物和TSP的增加会导致尘降减少的结论。

These 3 bacteria have good ability of biodegrading aromatic compound which has less than 3 aromatic ring, but, they have weak ability of biodegrading aromatic compound which has 4～6 aromatic ring.

研究还发现3菌对芳环数≤3的芳烃去除效果好，但对芳环数4～6的芳烃降解能力差。

Provided is a hygroscopic compound fiber using hygroscopic copolymerized polyester as compound ingredient, which is copolymerized with 40-99wt.

本发明提供吸湿性复合纤维，它以吸湿性共聚聚酯作为复合成分。

" Organic compound Substance whose molecules contain one or more carbon atoms (excluding carbonate s, cyanides, carbides, and a few others; see inorganic compound)."

有机化合物：分子中含有一个以上碳原子(不包括碳酸盐、氰化物、碳化物和一些其它物质)的物质。

" Organic compound Substance whose molecules contain one or more carbon atoms ( excluding carbonates, cyanides, carbides, and a few others; see inorganic compound)."

有机化合物：分子中含有一个以上碳原子(不包括碳酸盐、氰化物、碳化物和一些其它物质)的物质。

" Organic compound Substance whose molecule s contain one or more carbon atoms (excluding carbonates, cyanides, carbides, and a few others; see inorganic compound)."

有机化合物：分子中含有一个以上碳原子(不包括碳酸盐、氰化物、碳化物和一些其它物质)的物质。

Methods: 2ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2ethyl5nitro aniline. The product was then synthesized to 3methyl6nitro1Hindazole by using ringclosing reaction in the presence of NaNO2, and then ethylated to obtain 2,3diethyl6 nitro2Hindazole. The latter compound was then reduced by SnCl2/Hcl to get target compound 2,3diethyl6nitro2Hindazole.

以2乙基苯胺为原料经醋酐酰化、浓硝酸低温硝化及去酰基保护合成2乙基5硝基苯胺，后用亚硝酸钠关环得3甲基6硝基1H吲唑，经硫酸二甲酯甲基化得2，3二甲基6硝基2H吲唑，最后用氯化亚锡将其还原得到目标产物，通过1H NMR确定结构与目标产物一致。

Methods: 2-ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2-ethyl-5-nitro aniline. The product was then synthesized to 3-methyl-6-nitro-lH-indazole by using ring-closing reaction in the presence of NaNO2, and then ethylated to obtain 2, 3-diethyl-6- nitro-2H-indazole. The latter compound was then reduced by SnC12/Hcl to get target compound 2, 3-diethyl-6-nitro-2H-indazole.

以2-乙基苯胺为原料经醋酐酰化、浓硝酸低温硝化及去酰基保护合成2-乙基－5-硝基苯胺，后用亚硝酸钠关环得3-甲基－6-硝基－1H-吲唑，经硫酸二甲酯甲基化得2，3-二甲基－6-硝基－2H-吲唑，最后用氯化亚锡将其还原得到目标产物，通过1HNMR确定结构与目标产物一致。

Therefore, the author excogitates some synthesis courses of new compounds including selenium and aspirin based on medicament chemistry and coalition principle. The new compound is named 5-5'-diselenium monoacetyl salicylic acid and ascertained by IR ,UV and MALDI-TOF-MS, and its structure is: OOHThe compound is inhibiting to sarcoma and ascites tumour of white mice by pharmacology experiments, so it is worth researching deeply.

为此，本文运用化学拼合原理，提出了几种既含硒又含乙酰水杨酸的化合物新结构的合成路线，经过多次理论分析和探索试验，得到一种预测的新的化合物，命名为5-5′-二硒单乙酰水杨酸，经红外、紫外、飞行时间质谱测定，证明该化合物的结构为：经药理预试验表明，该化合物对小鼠S_(180)肉瘤和艾氏腹水型肿瘤均有抑制作用，具有深入研究的意义。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。