As demand has increased, so manufacturers have been encouraged to diversify and improve quality.

制造商们受需求增加的刺激而扩大生产品种，提高产品质量。

Medical devices also improve quality of life.

医疗装置也可提高生活质量。

It works with organizations that want to improve quality.

该研究所与想要改进质量的组织合作。

Karl E. Wiegers, Improve Quality Through Software Inspections.

Karl e . Wiegers所著，通过软件审核提高质量。

Third, we need to improve quality of services at the hospitals.

第三，我们需要提高医院服务的质量。