【protactinium】什么意思_英语protactinium的翻译_音标_读音_用法_例句_在线翻译

n. a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
同义词： protoactinium Pa atomic number 91

以上来源于: WordNet

1.
N a toxic radioactive metallic element that occurs in uranium ores and is produced by neutron irradiation of thorium. Symbol: Pa; atomic no: 91; half-life of the most stable isotope, 231Pa: 32 500 years; valency: 4 or 5; relative density: 15.37 (calc.); melting pt: 1572°C 镤 (Former name protoactinium)

In color and fabric, is based on popular trends this year, chose to protactinium gather green camouflage fabric;

在色彩和面料上，是根据今年流行趋势，选择了返镤归真的绿色迷彩面料；

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In particular the intermediate product protactinium-233 (Pa-233) is a neutron absorber which diminishes U-233 yield.

FORBES: Is Thorium the Biggest Energy Breakthrough Since Fire? Possibly.
The conversion is not direct, and involves the initial formation of thorium-233, which decays rapidly to protactinium-233, and then to uranium-233 over a period of about a month.

FORBES: Thorium Nuclear Power -- A Lesson From Norway
Hence presumably reprocessing is involved in the final stage, since if the protactinium-233 is left in the reactor it will be at least partly converted to protactinium-234, which is not a useful fissile material.

FORBES: Thorium Nuclear Power -- A Lesson From Norway

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protactinium
英 [ˌprəʊtækˈtɪniəm] 美 [ˌproʊtækˈtɪniəm]