然而，防腐蚀铸层与钢脚间的结合不良将削弱锌的阳极保护作用。
However the poor bond between the anticorrosion casting coating and steel-foot would weaken the anodic protection of zinc.
水泵剧烈震动可能电动转子不平衡，或联轴器结合不良，轴承磨损弯曲；
Rattling electric pump rotor may be uneven, or combination of bad coupling, bearings wear bending;
多层堆焊时，易产生堆焊层横向裂纹、焊道边缘气孔及层间结合不良等堆焊缺陷。
The transverse crack in surfacing layer, porosity in bead edge and non-fusion between layers are the defects that are liable to produce when multi-layer surfacing is used.
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