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y(tng)ĞVˮϵy(tng)^Vͷ_ϴr(sh)ˮˮ^(q)ࡢVװY(ji)eͬr(sh)ھֲ_ϴ(qing)ɳЌɄ(dng)F(xin)©ɰȲ
V͞VػV尲bD
V弼g(sh)ָ(bio)
(qing)ȣC25-C30 pp10
a(chn)ˇlҪGB50204(zh) Sg 28
^ƽo¶N߅oƓpA(y)ܜ(zhn)_oe(cu)бz©܃(ni)o
pƽ` 1mmV` 1mm߅ֱ`<5mm
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