Now appears a sort of plastic expansion shell bolt, which has strong expansion anchor-hold.

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。

youdao

Now appears a sort of plastic expansion shell bolt, which has strong expansion anchor-hold.

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。

youdao