The actual flea will be dark in color and about the size of a grain of rice.
实际跳蚤会在黑暗的颜色和大小约一米粒。
On this basis, a BP network model determining the relation between grain size and technological parameters is established, and the actual production technology has been optimized.
在此基础上建立了晶粒尺寸与工艺参数间关系的BP网络模型，进而以晶粒尺寸最小为目标对实际生产工艺进行了优化。
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