长度是一方面, 直径是另一方面。做平坛 6寸也用。6号螺栓2寸长, 不及8号1寸长。
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy
