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hot work of oil tank
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油库安全技术
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hot work of oil tank
油罐动火
在油罐禁火区进行焊接与切割作业及在易燃易爆场所使用喷灯、电钻、砂轮等进行可能产生火焰、火花和炽热表面的临时性作业。
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agricultural science and technology progress
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agricultural soil and water resources utilization
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agricultural stable isotope tracer technique
agricultural standardization policy
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