A comprehensive review is given about the determination of oxalic acid and calcium.The determinations of oxalic acid are aqueous titration,chromatography,fluorimetric method,et al.The different determinations of calcium are aqueous titration,voltammetry,optical spectrographic method,ion chromatography,et al.And,the traditional aqueous titration is cheapness,good of repeatability,but low intensity.It fits to determine high oxalic acid or calcium content sample.The optical spectrographic method,chromatography...
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Most of the time the lasers are dark, producing areas of light with low intensities with the occasionally brief but brilliant flashes of high - intensity light.
大部分的时间里激光是暗的，产生低强度的光区伴随着偶尔短暂的高强度光的闪烁。
But the line located in the low frequency of ship noise spectrum has high intensity and stability. This fact provides new idea in estimating target motion parameters.
而处于舰船噪声低频区的线谱具有很高的强度和稳定度，这一事实为估计目标运动要素提供了新的思路。
If an athlete trains mainly for speed, those muscle fibers in the middle will act as if they are high-intensity ones, but endurance training will make them behave more like the low-intensity fibers.
如果一个运动员主要是训练速度的，那些介于二者之间的肌肉纤维将像高强度肌肉纤维一样动作，而进行耐力训练将使它们的动作更像低强度肌肉纤维。
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