half value period

基本解釋

• [地球科學(xué)]半減期

英漢例句

雙語例句

• It showed that both the number and value of contracts awarded during the first half of this year had declined in comparison with the same period in 2006.
  報告顯示，與06年同期相比，今年上半年承包業(yè)務(wù)在數(shù)量及價值方麪都有所下降。

權(quán)威例句

• In a relatively short period of time, the stock lost half its value and languished for years.
  NPR: The Few, the Tech-Savvy Few: Option Millionaires
• In the first half of 2004 (the latest period for which figures are available) the value of sales fell by 1.3% compared with the first six months of 2003, according to the IFPI, a recording industry body, largely thanks to piracy.
  ECONOMIST: Can Stringer stop Sony malfunctioning? The

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詞組短語

短語

• half -period average value 半周平均值
• period half -value 半衰期;半值期;半化期

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專業(yè)釋義

地球科學(xué)

• 半減期