含金属的

Dimethylhexane-1,6-dimethyleurethane is the key material for preparation of 1,6-hexamethylene diisocyanate by non-phosgene route. Our work mainly focuses on the study of the catalytic performances of metal oxysalts and metal oxides for the ammonolysis of DMC to HDU-M. Experiment effect showed the ammonolysis was omposed by two steps, in which the first step was easier to occur than the second.

中文摘要六亚甲基-1，6-二氨基甲酸甲酯是非光气合成六亚甲基二异氰酸酯的关键原料，本文主要对金属含氧酸盐和金属氧化物这两类用于碳酸二甲酯胺解合成HDU-M 的催化剂进行了初步研究并优化了工艺条件。

In this paper, the corrosion of materials in carbonaceous atmospheres at high temperatures is reviewed, including metal dusting and internal carburization.

本文综述了材料在高温含碳气氛中的腐蚀，包括金属粉化和碳化，讨论了材料在含碳气氛中的腐蚀机理和腐蚀动力学。

In the concentration of 0~1 mol?L^(-1), the chemical shift of 17O-NMR δ(H2^17O in aqueous solutions of alkali chloride, alkaline earth chloride, sodium halide or some common oxysalt were measured.

在小於1mol？L^(-1)的浓度范围內，测试了硷金属、硷土金属氯化物、卤化钠及其它常见含氧酸盐溶液的17O-NMR化学位移δ

Phosphor bronze contains in addition to these metals one to four per cent of phoslhorus,which is present as the phosphide of one of the metals.

含磷青铜包含除这些金属之外1%到4%的磷，这种材料被认为是磷的一种金属。

In the thesis, a series of novel single and multi-armed oxadiazole bridging ligands and pyridyl-4, 5-imidazole dicarboxylic acid ligands have been synthesized. The coordination chemistry of these novel ligands with transition metal ions was investigated. In addition, two 1, 3, 4-oxadiazole bridging ligands end-capped by chelating Schiff-base coordination sites have been designed and synthesized. The coordination chemistry based on one of the two ligands with metal ions was primarily investigated.

本文报道了一系列新颖的含1， 3， 4-Oxadiazole杂环的单臂及多臂有机配体，研究了它们与过渡金属离子的配位反应化学；合成了吡啶基-4，5-咪唑二羧酸有机配体，研究了它们在水热条件下与过渡金属离子的配位反应化学；另外，还合成了1， 3， 4-Oxadiazloe杂环桥联的双Schiff-base有机配体，初步探讨了其与过渡金属离子的配位反应化学。

A triarylamine-based picolinic acid was synthesized through the Ullmann reaction and Negishi coupling reaction. Using this class of picolinic acid derivative as an auxiliary ligand and 1-phenylisoquinoline as a cyclometalated ligand, a cyclometalated iridium complex was also prepared.

通过Ullmann反应和Negishi偶联反应，合成了一种含三芳胺功能基的吡啶-2-甲酸衍生物；并以此为辅助配体、1-苯基异喹啉为环金属配体，设计合成了一种新型环金属铱配合物。

A triarylamine-based picolinic acid was synthesized through the Ullmann reaction and Negishi coupling reaction. Using this class of picolinic acid derivative as an auxiliary ligand and 1-phenylisoquino-line as a cyclometalated ligand, a cyclometalated iridium complex was also prepared.

通过Ullmann反应和Negishi偶联反应，合成了一种含三芳胺功能基的吡啶－2-甲酸衍生物；并以此为辅助配体、1-苯基异喹啉为环金属配体，设计合成了一种新型环金属铱配合物。

Is a shareholding enterprise specializing in research,development,manufacturing and marketing of 10 major lines of products including SF-1 oil-free self-lubricating sliding bearings;SF-2 boundary lubricating bearings,bushes,flanged sleeves and thrust washers;JDB copper 500# solid inlaid lubricating bearings,sliding blocks and slides;SF-S bimetal bearings;FB090 bronze bearings;FZ steel ball retainers;FR PTFE-reinforced soft strips;FD copper-bearing PTFE strips;and FU copper-based sleeve bearings..

嘉善博克莱滑动轴承有限公司是专业研究、开发制造销售SF-1无油自润滑动轴承，SF-2边界润滑轴承、轴瓦、翻边衬套、止推垫片、JDB铜500#固体镶嵌式润滑轴承、滑块、滑道、SF-S双金属轴承、FB090青铜轴承、FZ钢球保持架、FR四氟增强软带、FD含铜四氟带、FU铜基含油轴承等十大系列产品的股份制企业。

The results of the test showed that when the pH value of the wastewater was1.5,the dosage of iron filings was1%,the particle size of iron filing was60mesh,and the reaction time was40minutes,the removal rat...

目前在国内经济发达地区如苏南，都是直接用石灰中和来除去金属离子，其结果会产生大量的含铜含铝废渣

Herein through investigation on the collected CO2 corrosion data from different CO2-contained oil and gas fields, this study analyzed the serious damage and hazards on the gas production, summarized up the general rules of CO2 corrosion and its peculiarities at different areas. According to studies on phenomena, features, mechanism, and influencing factors on CO2 corrosion, this study put forward that a few effective countermeasures should be taken for anti-corrosion technology including injecting corrosion inhibitor, adopting stainless steel or bimetallic materials for the combination casing strings or well tubings.

为此，对我国几个不同类型含CO2油气田的现场的CO2腐蚀资料进行了调查、研究，分析了CO2腐蚀给天然气生产带来的严重危害性，总结出在不同类型油气田中CO2腐蚀的一般规律和不同区域CO2腐蚀的特殊性；在对CO2腐蚀的现象、特点、类型、机理以及腐蚀的影响因素研究的基础上，提出了含CO2气井防腐工艺技术应着重解决好含CO2气井的完井、生产管柱采用不锈钢或双金属复合油管、加注缓蚀剂等几种有效的防腐蚀措施。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。