The " bite test " was to check if the coin was gold.
“咬测试”是检查硬币是否是黄金。
Use an ordinary hinge door hinge only rely on the bite force can not help the test of time, could be considered to spring, either to the inside or outside the door, you can open and close easily.
用普通的合页门，只是依靠合页的咬合力量也禁不住时间的考验，可以考虑采用地簧，门无论向里还是向外，都可以开合自如。
In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.
文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。
In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.
文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。
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