...受到管制的服务行业，必须先从管理机构处取得公共事业和必需品的营业执照；（3 ）价格结构控制（control over price structure），即企业不得实施价格歧视。 （注：James G.
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它是最常见的一种控制方式，具有价格低廉结构简单、实用、维修方便的特点。
It is the most common kind of control mode, is inexpensive structure simple, practical and convenient maintenance characteristic.
单片机具有集成度高、控制功能强、系统结构简单、价格优廉等优点。
Microcontroller has the advantages of high integration, powerful control function, single structure, low price and so on.
该机器人具有结构精巧、控制可靠、运行平稳、价格低廉的特点，适合于企业、仓库、码头等推广使用。
The robot has the characteristic of fine configuration, controlling credibility, stable operation and low price. It is fit for enterprise, storehouse, dock.
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