要正切反切两种锯，正切是滑轨的锯片在上，反切的锯片在下可保证L状的面板切成直角，Harbor都有

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.

Copyright ©1998-2024 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy