This article studied the technical and economic features and cost evolution law of coal enterprise.
本文研究了煤炭企业经济技术特征与成本演变规律。
Screw pump features: the loss of small screw pump, good economic performance.
螺杆泵特点为：螺杆泵损失小，经济性能好。
China's economic situation in 2011 will take on the typical "double-face" features.
2011年，中国的经济形势依然具有典型的“两面性”特征。
This resist printing process features stable quality and high economic benefits.
采用此防印工艺，产品质量稳定，经济效益良好。
The second is the industry features in the background of economic crisis.
第二是经济危机下行业和产业的一些特点。
The second is the industry features in the background of economic crisis.
第二是经济危机下行业和产业的一些特点。
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