Analyses of LD1 and LD2 give a measure of the precision associated with laboratory procedures, but not with sample collection, preservation, or storage procedures.
对LD 1和ld2的分析对实验室分析过程的精密度的评价，但是不包括样品的收集、保存和储存过程。
The structure characteristics of deformation and recrystallization for LD2 Aluminium alloy tube were investigated by means of an electrolytic coating film-light etching technique.
采用电解复膜-光蚀技术研究了LD2 铝合金薄壁管材变形和再结晶组织特征。
The structure characteristics of deformation and recrystallization for LD2 Aluminium alloy tube were investigated by means of an electrolytic coating film-light etching technique.
采用电解复膜-光蚀技术研究了LD2 铝合金薄壁管材变形和再结晶组织特征。
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