污染等级 class of pollution; classes of pollution; pollution class 颗粒污染 particulate pollution ..
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environmental pollution class 环境污染类型
outer-insulation pollution class 外绝缘污秽等级
class of pollution [环境] 污染等级
high-class pollution-free wooden material 高级无污染木材
site pollution severity class 现场污秽度等级
a class project on pollution 一个有关污染问题的班级课题 ; 一个关于污染的班级计划
Recently we held a class meeting to discuss the problem of "Good care environment, protect the earth". As we can see, the climate anomalies in the air, water, soil and other serious pollution.
最近我们举行了一个类会议来讨论这个问题的“爱护环境，保护地球”我们可以看到，气候异常的空气、水、土壤和其他严重污染。
IOPP is the certificate for the vessel that is qualified for the requirements issued by the class on oil pollution prevention.
当船舶符合防污染要求时，船舶会得到船级社签发的IOPP证书。
In April, our class took part in the chongqing bishan BiCheng Town experiment elementary school wall south river pollution situation of check group, to investigate the wall of south river pollution.
四月份的时候，我们班参加了重庆市璧山县璧城镇实验小学璧南河污染情况的查小组，去调查璧南河的污染情况。 。
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