1·Due to the price surges of crude oil, raw coal, and steel products, China's producer price index (PPI) rose by 6.6% over the same period of last year in February, hitting a 3-year high.
由于原油、原煤、钢材等价格的大幅上涨，2月份中国工业品出厂价格(PPI)同比上升6.6%，达到近三年来的高位。
2·The relationship between the raw coal ash content and the structural differentiation was studied by using statistics and the principles of dissipation structures.
运用统计方法和耗散结构原理，对原煤灰分产率和构造分异作用的关系进行研究。
3·The author describes the fuzzy control towards high pressure air valve in raw coal separation system, including fuzziness of input, setting up of fuzzy control rules and certainty of outputs.
论述了如何对原煤分选系统中的高压气阀进行模糊控制，其中包括输入量模糊化、模糊控制规则的建立及输出量的清晰化。
4·The author describes the fuzzy control towards high-pressure air valve in raw coal separation system, including fuzziness of input, setting-up of fuzzy control rules and certainty of outputs.
论述了如何对原煤分选系统中的高压气阀进行模糊控制，其中包括输入量模糊化、模糊控制规则的建立及输出量的清晰化。
5·A formula of rebound distance based on coefficient of restitution was deduced through kinematic analysis of raw coal (mixed gangue) in the process of oblique-impact.
通过对斜碰撞过程中原煤(混矸)球的运动分析，推导出基于碰撞恢复系数的物料块反弹距离公式。