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- half decay period 半衰期
- GD can be excited by light from 300 nm to 400 nm, and emit 450-500 nm light. The decay period was above 12 hours. 30O~4 50llln紫外光能有效激发玻璃GD，发射450一520lun的蓝光，余辉时间长达12小时.
- stapedial reflex half decay duration measurement 镫(骨)肌反射半衰期测量
- stapedial reflex half decay test 镫(骨)肌反射半衰试验
- I apportioned half the property to each of them. 我把财产的一半分配给他们各人。
- What made the Roman Empire decay? 罗马帝国为何衰亡？
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- I worried half the night and have a fitful sleep. 我半个晚上都一直在担心，故而时醒时睡。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- He can fling off a poem in half an hour. 他可以在半小时之内草就一首诗。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- It took him half an hour to finish the work. 他花了半个小时做完这项工作。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- I usually go to bed at half past ten. 我通常十点半睡觉。
- Cavities in teeth are caused by decay. 牙齿的蛀洞是由蛀蚀造成的。
- The results of thermal analysis showed that the DTA, TG and DTG curve of remainders had the similar shapes in different decaying periods. 热分析的结果显示，不同腐解期腐解物的DTA、TG和DTG曲线的形状基本相似。
- Half the fruit crop froze out in the sudden cold. 一半的水果作物在突如其来的寒流中被冻死。
