电气化铁道 关键词： 绝缘子；污秽度；监测；研究 [gap=294]Keyword： insulator; pollution grade; monitoring; study
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Environmental Pollution Grade 环境污染等级
soil pollution grade standard 土壤污染等级标准
the grade of fluid pollution 油液污染度等级
·2,447,543篇论文数据，部分数据来源于NoteExpress
As far as the polluting level was concerned, the highest level was present in winter, viz. the heavily pollution grade.
冬季最高降尘污染等级是三个季节中最高的，达到重污染水平；
The cause inducing noise pollution on high grade road, and the noise abatement measures both at home and abroad are introduced. A way to precaution noise given.
介绍了高等级公路噪声污染产生的原因，介绍了国内、外降噪的主要措施，同时提出了防噪声方式。
Coupled with environmental pollution of high-grade paint, to provide the environmental health of solid wood products.
加上环保无污染的高档油漆，为客户提供健康环保的实木产品。
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