Practice showed that this design was workable to overcome the loosecontact problems.
它克服了铁底松动、接触不良等问题。
2
The mechanical type chooses the tier utensil thanks to the rub , Cause easily the contact finger to wear and tear and has ariseed loosecontact .
机械式选层器由于磨擦，轻易导致触头磨损而出现接触不良。
3
Light microscopic evaluation(HE staining)showed that PMMA was in loosecontact with the bone trabecula, PMMA could not be resorbed, and new bone could not be found.