The last part is the deep exploitation and design of Chifeng's tourism product.
第四部分，赤峰市旅游产品的设计与开发。
In exploitation and design of the modern digital electronic system, programmable logic device (PLD) is used more and more widely.
现代数字系统开发设计中，可编程器件的使用越来越普遍。
The integrated assembly with sand removal and washing in crude oil gathering system designed by the Exploitation and Design Institute of Dagang Oilfield Group is up to the sand removal rate of 90%…
介绍大港油田集团勘察设计研究院研制的原油集输系统除砂洗砂一体化装置，经试验除砂率达到90％以上。
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