Việt
then chữ nhật
then ngang
then bằng
Anh
key on flat
rectangular key
cross key
transverse key
feather
feather key
flat key
parallel key
prismatic key
sunk key
key on flat, rectangular key /cơ khí & công trình/
cross key, key on flat, transverse key
feather, feather key, flat key, key on flat, parallel key, prismatic key, rectangular key, sunk key