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环境保护措施 | |
earth.sc. | environmental protection measure; environmentally conserving measure |
总体布置示意图 | |
plast. | rough package drawing |
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environmental protection measure; environmentally conserving measure | |||
antipollution measure; environmental protection measures |
环境保护措施: 2 phrases in 2 subjects |
Ecology | 1 |
Hydroelectric power stations | 1 |