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The alloy was prepared through melting gold, silver, palladium, tin, indium, ruthenium, zinc, germanium in the high frequency induction furnace protected by argon and then deaerating the crude alloy at vacuum.

合金的合成以金、钯、银、锡、铟、锌、钌和锗元素为原料,在氩气保护下高频感应炉熔化,经真空脱气处理后水淬冷却。

CrO-Y2O3catalysts were prepared by a deposition-precipitation method and tested by fluorinating 2-chloro-1,1,1-trifleuoroethane (HCFC-133a) to synthesize 1,1,1,2-tetrafluoroethane (HFC-134a).

用沉积-沉淀法制备了CrO-Y2O3催化剂,考察焙烧气氛及温度对1,1,1-三氟-2-氯乙烷(HCFC-133a)气相氟化合成1,1,1,2-四氟乙烷(HFC-134a)催化性能的影响。

In the reaction process of synthesizing vinyl acetate,the loss of the active species Zn2 from the surface of activated carbon results from Zn2 sublimating of gas phase and the blocking inside micropores with condensation products.

乙炔和醋酸合成醋酸乙烯的反应过程中,催化剂的失活,是由催化剂中的醋酸锌Zn2从活性炭表面上升华到气相中以及被凝聚物堵在微孔内部而引起的。

The formulation of JG3 synthetic automobile brake oil is explained. It is verified bytest that this product offers super vapour -- lock resistance under high temperature, good lowtemperature fluidity, corrosion resistance, and rubber gasket non -- solvency . The formula canmeet GB10380--89 standard and the bench tester requirement.

叙述了 JG3合成汽车制动液的配方研制过程,试验证明,该产品具有优良的高温抗气阻性、良好的低温流动性、抗腐蚀性,以及对橡胶皮碗的不溶胀性,该配方已达到GB10830—89标准及台架试验要求。

Eleven α-V-group cation-substituted toluenes (1) and acetophenones (2)were synthesized. The equilibrium acidities of these compounds were determined indimethyl sulfoxide solution by the "Overlapping Indicator Method" and the homolytic C-Hbond dissociation energies were derived from a thermodynamic cycle combining pKawith oxidation potential of carbanion.

合成了α-位有第V、Ⅵ主族元素杂正离子取代基的甲苯系列(1)和苯乙酮系列(2)共11个Ylide前体化合物,用重迭指示剂法首次测定了其在二甲亚矾溶剂中的酸性解离常数PKa,同时结合碳负离子氧化电位的测定,通过热力学循环估测了它们的气相均裂键能。

It is currently produced by catalytic ammoxidation of propylene in fluidised beds. Several disadvantages still remain in the process: high ammonia concentration in the raw gas; high CO2 yielding and considerable ammonia concentration in output gas. The key subjects in the research domain are effective catalyst design and environment-friendly process development.

工业上普遍采用流化床丙烯氨氧化法合成丙烯腈,但该工艺一直来存在原料气中氨的配比高、反应尾气中含有余氨和完全燃烧产物的收率仍较高的不足,开发高效低氨比催化剂及相应的环境友好反应工艺一直是该领域重点研究的课题。

The conventional neutron-density log combination in gas identifica tion is inherited and developed.

在继承发展传统的中子——密度测井组合找气方法的基础上,建立两种测井的视孔隙度交叉刻度模型,并选取与实际岩性一致的混合岩性骨架测井响应参数,合成了测井响应新信息。

The product was characterized by refractive index, IR spectrum, gas chromatography and mass spectra.

对所合成的产品进行了折光率的测定及红外光谱、气相色谱-质谱的分析,并确定了最佳反应条件。

Iron sulphide s were synthesized mainly by way of gas-solid reaction ofmetallic iron or iron-nickel alloys with the mixture of H,S and H,.

铁硫化物的合成,通常是通过固-气反应来实现,本文利用电弧放电的方法。

Method] With bottom sludge from Donghu Lake, bare soil from hillside, fertile vegetable soil and oil-soaked soil as initial samples, the bacterial strains with ability of synthesizing PHAs were screened out through enriching, isolation and purification, staining with Sudan black B and qualitative and quantitative analyses by infrared spectroscopy and gas chromatography.

方法]以东湖底泥、山坡裸地土、肥沃菜园土和油脂浸润土为初始样品,经富集、分离纯化、苏丹黑B染色、红外光谱及气相色谱定性定量分析筛选出具PHAs合成能力的细菌菌株。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。