Although there are a lot of the fabricating techniques of functionally gradient material (FGM), the centrifugal casting method is more effective, cheaper and easier to operate.
虽然梯度功能材料的制备方法很多，但效率较高、成本较低、操作较简单的方法是离心铸造法。
A new hybrid algorithm which combines the chaos optimization method and the nonlinear conjugate gradient method approach having an effective convergence property is proposed.
利用优化问题的非线性共轭梯度法与混沌优化方法相结合，提出了一种新的混合优化算法。
Characterized by strong anti-interference capacity, high resolution ratio and portability of the instrument, the dual frequency gradient method has proved effective in practice.
双频梯度测量法有抗干扰能力强、分辨率高、仪器轻便等特点，实践证明应用效果很好。
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