The newly launched HJ-1 environmental satellites a and B carry out efficient macroscopic and real-time ecological monitoring and evaluation.
新建成环境一号A、B星，大范围、快速和动态地开展生态环境宏观监测及评价。
HJ-1C satellite is one of the HJ-1 small satellites, which are developed and launched by our country.
HJ - 1小卫星群是由国家减灾中心和国家环保总局组织实施，有关单位参与研制的小卫星星座系统。
The researched results show that the combined usage of the chemical agent HJ-1 with HJ-3, HJ-4 and HJ-5 can reduce the concentration of magnesium ions in the saline wastewater.
对离子交换树脂再生盐水回用工艺进行了实验研究。实验结果表明：当HJ-1与HJ-3、HJ-4、HJ-5联合使用时，再生盐水中镁离子的浓度可大幅度地降低。
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