发布时间:2025-02-01 11:16:29
别做纯白色,做点米黄色这样看起来就比较不容易脏了
麻烦采纳,谢谢!
机械性能实验标准材质为42crmo4v做屈服强度抗拉强度延伸率冲击功以及化学成分谢谢
2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29一个包装盒如果从里面量长28cm宽20cm体积为1176平方分米他的高是多少
2025-02-01 11:16:29 2025-02-01 11:16:29 2025-02-01 11:16:29