The pattern features of the cracks fractured in seam would not have a fixed depth limitation.
煤层压裂裂缝的形态特征没有固定的深度界限。
In chapter 3, the method of multi classifier combination based on different pattern features is studied.
第三章,研究了基于不同模式特征的多分类器联合方法问题。
X-ray diffraction pattern features strong reflection on the odd basement layers and weak one on the even basement layers.
射线衍射谱的特征是基底奇数层反射强,而偶数层反射不明显。
应用推荐