Large synthetic diamond was grown by temperature gradient method (TGM) under HPHT.
用高温高压温度梯度法作为实验手段来生长优质宝石级金刚石单晶。
The mode of temperature gradient of this Bridges box girder is developed by the method of nonlinear regression.
采用非线性回归的方法，提出了该桥混凝土箱梁的温度梯度模式。
The experiment shows that this method is suitable for the measurement of the phase object with the small sectional size and the small temperature gradient.
实验表明此方法适用于几何尺度较小或温度梯度较小的三维位相物体温度场的散斑照相测量。
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