当公标尖端部的第一台阶处折断后，尚有棘刺形的第二台阶与母标相扣合，避免了掉标的可能。
After the first step of the tip part of the male mark is broken off, the second thorn-shaped step is buckled with the female mark, which avoids the possibility of mark falling.
当公标尖端部的第一台阶处折断后，尚有棘刺形的第二台阶与母标相扣合，避免了掉标的可能。
After the first step of the tip part of the male mark is broken off, the second thorn-shaped step is buckled with the female mark, which avoids the possibility of mark falling.
应用推荐