The non-volatile fields are cr2, cr3, and cr4.
非易失性域有 cr2、cr3 和 cr4。
With this machine, we can make Cr3 + solution life longer 3 times.
使用电解三价铬再生机后可延长粗化药水的寿命高达3倍。
Air permeation experiment, VMD of distilled water and VMD of solution containing Cr3 + are carried out.
本文进行了气体渗透实验、蒸馏水的VMD实验及含铬水溶液的VMD实验。
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