Optical projector , tension tester , pressure tester and torsiometer are the testing instru - ments . testing results can be typed automatically 检测设备有光学投影仪、拉、压、扭力测试仪,检测结果由测试仪自动打印。
The composition and properties of three types of titanium investment materials are examined by x - diffraction apparatus , hydraulic pressure tester and thermal expansion coefficient apparatus , respectively 摘要应用x射线衍射仪、液压试验机和热膨胀仪检测国外三种体系铸钛专用包埋料的组成和性能。