发布时间:2025-02-09 07:17:07
听诊器是听细微声音的,想楼下的声音的话一般比较大声音的话其实直接把耳朵贴在地板上是最好的方法。如果是说话声就比较困难从地板那里听不如去窗口(上下楼的窗在一面的。。)
谁干过镜面抛光钛合金材料用台式机求详细工艺和抛光用品如果实验成功定重谢1531918281
2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07我家换新房子没装修之前手机信号正常装修完后家里手机没信号了求解决方法
2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07 2025-02-09 07:17:07