Việt
sự hàn không thấu
sự hàn không thấm
Anh
lack of penetration
percolation
incomplete root penetration
Đức
Bindefehler in der Wurzel
schlechte Durchschweissung
ungenuegende Durchschweissung
Pháp
manque de pénétration
incomplete root penetration,lack of penetration /INDUSTRY,INDUSTRY-CHEM/
[DE] Bindefehler in der Wurzel; schlechte Durchschweissung; ungenuegende Durchschweissung
[EN] incomplete root penetration; lack of penetration
[FR] manque de pénétration
lack of penetration, percolation