The goods will be paid with non-transferable , revolving , confirmed LC (validity one year, payment month by month). In addition , buyer shall also open L.

货物必须由不可撤销的、保兑的、证实的信用卡（信用卡有效期为一年，付款方式为逐月支付。）

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I affirmatively confirmed the conformity of the theory wit lc practice.

我断然确认了理论与实践相符。

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Thestructure of the products have been confirmed by NMR and LC-MS.

化合物结构经核磁共振(nmr)和液-质联机(LC - MS)进行确认。

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