研究了花岗岩板在单轴压缩应力状态下的微观破坏过程。试验主要采用了液压加载台、光学显微镜、同步录象系统以及二次复型技术等。
Progressive cracking of granite plate under uniaxial compression had been investigated by using a loading frame, which could be well equipped with optical microscope and video recorder.
电池用完后自动关机，关机前系统把录象的文件自动保存下来，然后关机，以保证文件安全。
When the battery is used up, it will automatically shut down. Before the system shutdown, the video files can be automatically saved.
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