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1)  20g material
20g材料
2)  material 20 g
材料20g
1.
To analyze the high-temperature corrosion problem in boiler water-walls, high-temperature oxidation tests were conducted of boiler water-wall material 20 g on a high-temperature atmosphere test rig.
为了分析锅炉水冷壁存在的高温腐蚀问题,利用高温气氛炉试验台进行了锅炉水冷壁材料20g的高温氧化试验,采用热分析动力学的方法对试验的数据进行处理和分析,求得了在810~920℃纯空气条件下20g的氧化活化能和指前因子;利用配有能谱分析仪的扫描电镜对氧化产物的结构和元素组成等进行了分析,得出了20g氧化过程中的平均的氧化速度。
3)  20g Steel
20g钢
1.
Using flow sand jet experimental machine, the erosion wear performance of 20g steel was studied.
采用气流喷砂型实验机,试验研究20g钢的冲蚀磨损性能。
2.
By deep welding test of 20G steel and 20Cr2Ni4A steel using laser, right performance and aspect is gained at welding zone for the welding of dissimilar steels, which is qualified by both theory analysis and field testing.
通过激光对20G钢和20Cr2Ni4A钢进行了焊接,理论分析和试验结果表明,20G钢和20Cr2Ni4A钢激光焊接可以获得良好焊接接头,而且焊缝成形良好,美观,完全符合工业上的需要。
4)  G steel
20G钢
1.
Described in the paper is the development of20G steel billet for tube-making by Hengyang Steel Tube(Group)Corporation Ltd.
研制的20G钢连铸管坯及钢管的各项性能指标均满足技术协议要求,证明该生产工艺可行。
5)  20G tube blank steel
20G管坯钢
1.
20G tube blank steel is produced by the 100t UHP-EAF in NISCO, which can meet demand of market through a lot of measures such as refining raw material, standardizing deoxidization technique, optimizing argon-bubbling treatment, selecting the best water distribution model in second-cooling zone, adopting low overheating degree casting, controlling drawing speed and rolling temperature and so on.
电炉厂采用100tUHP电炉短流程生产20G管坯钢。
6)  20g carbon steel
20g碳钢
补充资料:16,17-Epoxypregna-5,9(11)-diene-3,20-dione3,20-diethyleneketal
CAS:173350-27-1
分子式:C25H34O5
分子质量:414.54

中文名称:16α,17α-环氧孕甾-5,9(11)-二烯-3,20-二酮3,20-二乙二醇缩酮
16α,17α-环氧孕甾-5,9(11)-二烯-3,20-二酮双(环1,2-乙二基缩酮)

英文名称:16,17-Epoxypregna-5,9(11)-diene-3,20-dione3,20-diethyleneketal
16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)

性状描述:结晶。熔点160℃。

生产方法:可用16α,17α-环氧孕甾-4-烯-3,11,20-三酮(即16α,17α-环氧-11-酮基黄体酮)经(3-位;20-位酮基与乙二醇)缩酮化、(11-位酮基)还原(成11-位羟基)、(9,11-位脱水)消除[形成9(11)-位双键]制得该品。

用途:倍他米松的中间体。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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