There are four types of chain links which include ( ).
选项:
A:plain unground, front ground, back ground, front and back ground
B:plain, front ground, back ground, front and back ground
C:plain unground, fork ground, tail ground, fork and back ground
D:plain unground, fork ground, tail ground, fork and tail ground
发布时间:2024-06-03 10:55:45