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- The brightness,afterglow time and stability against light were measured. 研究了影响夜光开关辉度的因素。
- It has better initial luminance and longer afterglow time, The initial luminance is 3.5 cd/m2 when the powder’s diameter is 0.125 mm. 粒度为120目的发光粉初始亮度可达3.;5 cd/m2。
- The decay of light strength and relations between fluorescent powder concentration and film thickness, and light strength and light afterglow time were discus... 讨论了荧光粉含量、涂层厚度与荧光光强、余辉时间等的关系。
- The result showed that the emission peak is at about 486nm, the samples emit blue-green light. The first brightness is 5200mcd/m~2 , the afterglow time is more than 45 hours long. TEM indicated that the average size of the particles is about 50nm. 结果表明其发射波长为486nm，余辉颜色为蓝绿色，初始亮度达到5200mcd/m~2，余辉时间长达45小时，TEM分析表明该材料的平均粒径为50nm左右。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He will come on time even though it rains. 即使下雨，他还是会准时来的。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- At that time he had two helpers. 当时他有两个助手。
- I'm sorry to obtrude on you at such a time. 我很抱歉在这个时候打扰你。
- I referred to my watch for the exact time. 我看了一下手表好知道准确的时间。
- God mete out justice in his own good time. 羞恶自有报，只争迟与早。
- I spend most of my time scouting around for book. 我把大部分时间都用来找书了。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- The teacher let him off the hook with a warning this time. 这一次老师放过他，只给了一个警告。
- I'll overlook your lateness this time. 我可以不计较你这一次的迟到。
- He get seasick every time he crosse the channel. 他每次渡英吉利海峡时都晕船。
