视正格子原胞基矢和倒格子原胞基矢为线性空间的两个基底，提出了求解倒格子原胞的一种新的矩阵算法。
Regarding the reciprocal lattice primitive cells basic vectors as two line space basic vectors, this paper finds a new matrix method to work out the reciprocal lattice primitive cell.
供货商可以视情形向第三方订立二线合同，采购所需产品包括材料和成品。该合同可由原供货商或二线供应商订立。怪，这个合同不是由原供应商和二线供应商共同签订的吗？
The Supplier may procure the parts (materials and items) required for execution of the supply as he sees fit by means of sub-orders placed by himself with third parties or by the third parties.
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