Charles Darwin could work no longer than one hour every day due to bad health all his life, but what great achievements he has obtained.
达尔文一生多病，不能多做工，每天只能做一点钟的工作。
The mathematic model of one dimensional multi stage carburation is obtained and it can describe every physical phenomenon in carburation.
该文建立了多段法渗碳的一维数学模型，用此数学模型能够清晰地描述渗碳过程中每一时段的物理行为。
After registration, you will be award gold, and you may get 5 gold every one hour, one day can obtained 10 times.
注册后会有免费黄金赠送，并且你每个小时可以免费领取5个，一天可以领取10次！
The experimental results showed that the PA signal enhancement can be obtained by making use of the every one of the factors above, and so the sensitivity of PA detection was increased effectively.
实验结果表明，这些措施都能使光声信号增强，有效地提高光声检测的灵敏度。
The experimental results showed that the PA signal enhancement can be obtained by making use of the every one of the factors above, and so the sensitivity of PA detection was increased effectively.
实验结果表明，这些措施都能使光声信号增强，有效地提高光声检测的灵敏度。
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