quality质量可数吗

Our main concern is to provide quality customer service.

我们最关心的是为顾客提供优质服务。

The data is limited in terms of both quality and quantity.

这份资料在质量和数量上都很有限。

Does the quality of teaching depend on class size?

教学质量取决于每个班的人数吗？

She acts well but she hasn't got star quality.

她演得不错，但缺少成为一个明星的`素质。

This model represents the best compromise between price and quality.

这种型号是价格和质量间的最佳折中方案。