head fold-Cephalic fold
头褶;
head fold-Cephalic fold
头褶;
three-circuit transformer three winding potential transformer three-winding transformer
三绕组变压器;
three-circuit transformer three winding potential transformer three-winding transformer
三绕组变压器;
three-circuit transformer three winding potential transformer three-winding transformer
三绕组变压器;