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- decrease in coal quality 煤质下降
- "A drop in coal quality has also affected the normal operation of power facilities," the report said. 报道中还提到：“煤炭质量的下降也对发电设备的正常运行造成了影响。”
- The decrease in unemployment was 30 percent. 失业人数减少了百分之三十。
- There has been a decrease in our imports. 我们的进口减少了。
- The coal analysis method has become an important means for determining mixed coal condition, this method has made up some insufficient aspects of proximate analysis in coal quality test. 煤岩分析法已成为辨别煤质特别是确认混煤情况的重要手段,它在某些方面弥补了工业分析在检验煤质上的一些不足。
- A decrease in signal power as measured between two points. 信号能量在两点间测量出来的减小量。参阅signal。
- There has been a steady decrease in population in this city. 这个城市的人口在持续下降。
- There has been a decrease in the number of murders on the city. 城里凶杀案件有所减少。
- France has fallen behind (Germany) in coal production. 法国在产煤方面落後(於德国)了。
- There has been a decrease in traffic accidents. 交通事故减少了。
- There is a general decrease in grain size upward. 粒度一般是向上递减的。
- Application of PARR 6300 calorimeter in coal quality analysis PARR6300量热仪在煤质化验中的应用
- There has been a decrease in our imports this year. 我们今年进口物品减少了。
- A decrease in or an absence of bile secretion. 无胆汁胆汁分泌的减少或是没有胆汁分泌
- He bought in coal for the winter. 他购买了大量的煤过冬。
- There was a decrease in the number of children in school. 在校的儿童人数有所减少。
- The cold has decreased in severity. 冷空气已经大大减弱。
- Canada used to be rich in coal deposits. 加拿大曾经盛产煤矿。
- There has been a decrease in imports. 进口货物有所减少.
- This part of country is rich in coal. 这个地区盛产煤。
