A new PRD spudding fluid was developed, the performance of the PRD weak gelling spudding fluid was evaluated.
对研制出的一种新型PRD钻开液-PRD弱凝胶钻开液体系进行了性能评价。
Early this month, Guangdong Province ordered a halt to any further expansion of three major polluting industries, including the cement, ceramics and plate-glass production facilities, in the PRD.
本月初，广东省叫停了珠三角地区的水泥、陶瓷和平板玻璃这三个重污染行业的扩张。
Early this month, Guangdong Province ordered a halt to any further expansion of three major polluting industries, including the cement, ceramics and plate-glass production facilities, in the PRD.
本月初，广东省叫停了珠三角地区的水泥、陶瓷和平板玻璃这三个重污染行业的扩张。
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