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blasting operation security cordon
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blasting operation security cordon
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工学
爆破作业
释
blasting operation security cordon
爆破作业安全警戒
爆破工程中,在装药作业时将炸药作业区与周边隔离,在起爆阶段将无关人员和爆破材料撤离危险区。
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arabic cowry shell
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Arabidopsis downy mildew
arabin
arabinofuranosidase
arabinogalactan
arabinose
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