Foam acidizing is used on carbonate reservoirs, because it is more retarded and has better fluid-loss control than normal acid.
泡沫酸化用于碳酸盐储层，因为它与正常酸相比反应速度较慢而且防滤失性能较好。
China's success in population control has retarded the expansion of the population of the world as a whole.
中国成功地实行了人口政策，延迟了世界总人口的增长。
China's success in population control has retarded the expansion of the population of the world as a whole.
中国成功地实行了人口政策，延迟了世界总人口的增长。
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