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为了解决这一问题,出现了一种具有强胀锚力的塑料胀壳式锚杆。
Now appears a sort of plastic expansion shell bolt, which has strong expansion anchor-hold.
youdao
-
为了解决这一问题,出现了一种具有强胀锚力的塑料胀壳式锚杆。
Now appears a sort of plastic expansion shell bolt, which has strong expansion anchor-hold.
youdao