According to the problems with wastewater filtration, filtering media, backwash and media support system are discussed mainly.

针对污水过滤中的问题广重点对滤料、反冲洗、滤料支持系统进行了讨论。

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According to the problems of low agility and reliability of the NC machine tools control system, an electric control system is designed.

针对数控机床电气控制灵活性差、可靠性低等问题，设计了一个电器控制系统。

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What are the problems of oil lamps according to Paragraph 1?

根据第一段，油灯存在哪些问题？

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Throw a bunch more cars into the mix, 13 million of them were sold in China last year, according to IHS Automotive and the problems start compounding.

CNN: China needs smog-free air in a can

Although it's not life-threatening itself, the disease can lead to life-threatening complications such as pneumonia and swallowing problems, according to the Mayo Clinic.

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IBM, then, is the victim of company-specific problems, according to the analyst, which are tied to its services operations.

FORBES: IBM's Services Units Struggle For Growth As Quicker Rivals Like Accenture Rise