The survey design is a kind of intelligence service, and the service technology level and service quality are difficult to measure.
勘察设计是一种智力服务，其服务技术水平和服务质量难以衡量。
The survey design is a kind of intelligence service, and the service technology level and service quality are difficult to measure.
勘察设计是一种智力服务，其服务技术水平和服务质量难以衡量。
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