首先，合成仪器行业缺乏竞争和高昂的维护成本成为遏制市场增长的一个重要因素。
First, a lack of competition within the market and the corresponding high cost of SI systems serve to restrain growth.
然而，另一方面，复杂的应用连接和程序代码造成了高昂的维护代价和更新代价。
On the other hand, however, the complicated application connection and the programming code caused the high maintenance cost and the update cost.
不断变化的建筑规范、人们逐渐发展的品味，以及维护这些精美的旧标志牌的高昂成本，让企业欣然接受了发光二极管。它们节约能源，但成本仍然很高。
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.
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