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The key point of QC in vibroseis operation is source state.
可控震源施工中质量控制的重点是震源状况。
youdao
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Qc. If buyer is foreign traveller, how many tax could be refunded?
如果是外国游客，一般能给予多少退税？
youdao
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Qc. If buyer is foreign traveller, how many tax could be refunded?
如果是外国游客，一般能给予多少退税？
youdao