氕

piē

protium (H1)

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【化】 light hydrogen; protium

【医】 H1; protinium; protium; protohydrogen

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pie1

protium 1H, light hydrogen, the most common isotope of hydrogen, having no neutron, so atomic weight 1

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氕

piē

名

{化} （氢的同位素之一） protium(?H)

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氕|氕 [piē] ► protium 1H ► light hydrogen, the most common isotope of hydrogen, having no neutron, so atomic weight 1