first-class qualification
first-class qualification
一流的资格
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The contractor shall have a first class qualification on construction of the system, and shall obtain the qualification approved by the local authority, if necessary.
承包商必须具有本系统施工一级资质，必要时，须取得地方主管部门认可的资质。
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