The good news for India is more recently even multinational companies have begun to see the lowertiers of the market as hotbeds for innovation.
对印度来说,最近有一个好消息,即便是一些跨国公司也开始将更低层次的市场看作革新温床。
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Components should not cross tier boundaries, and services are useful for encapsulating the components within a tier, especially at the mid - and lower-level tiers.
Machine hall consists of two tiers: on the upper one there are generators and turbines, on the lower - pumps and pipelines. It is quite hot in the hall and rather noisy.