ureaformaldehyde andnbsp的意思|示意
美 / /
英 / /
ureaformaldehyde andnbsp
ureaformaldehyde andnbsp的网络常见释义
电玉 ... 点焊接 spot welding 醛树脂；电玉 ureaformaldehyde (UF) 断面线 cross hatching line ...