In addition, aiming at these areas, it gives emphasis to the carbon dioxide and combinedshaft areas.
而且还应对这几个区域，特别是二氧化碳和混合井区域，进行重点研究。
2
Based on the prediction results, the 840 samples are classified into five: methane, carbon dioxide, combinedshaft, common and prediction failure.
从预测结果来看，把840个样品分成五类：甲烷、二氧化碳、混合、一般、预测失败。
3
The thesis presents a practical die structure with Angle pin and gear shaft and rack for secondary combined inclined down loosing core of die casting hopper bodies.